AN: Warning for a little Iris and WestAllen bashing in this chapter. If that's going to bug you, (which would be a tad strange seeing as this is a Snowbarry story, but I'm warning everyone anyway), then don't read this chapter.

Disclaimer: I own nothing.

Years later, Killer Frost finally escaped from her cell at Iron Heights. By then, the Barry that would become Savitar was long gone. She still didn't know exactly what Team Flash had done to scare him away, but she was certain that she would get the chance to ask him.

Killer Frost snuck into STAR Labs late that night. It always was easy to break in there. The thought made her giggle, as that was something Savitar often complained about: the fact that they were all brilliant scientists, but no one had ever managed to truly up the security. Judging by the suit he made, Caitlin was certain Barry would be able to do it himself and wondered why he never did. Perhaps he'd been too busy. Caitlin did realize that juggling his day and night job had to be hard. Barry had to be a CSI, be the Flash, get wounded a lot as the Flash, go through medical procedures without anesthesia, recover, and then go pretend to be Barry Allen where nothing was wrong. He also had to juggle all of his relationships with the Team and outside it, and boy was Iris West a handful. Caitlin noticed that once Barry and Iris started dating, she rarely got to see him anymore, he was always with her. At first, she was upset with him for it, as it felt like he cared about Iris more, but that wasn't the case. Barry still loved Caitlin and Cisco just as much as he did before, he was simply forced to spend more time with Iris, because she demanded it. The moment they started dating, she took control of his life. The two of them seemed to become co-dependent, which was something Killer Frost was sure Iris West relished in, especially considering the video message with wedding vows she left him. That was why killing her was enough to drive Barry into the dark to form time remnants. However, Killer Frost knew that wasn't the only thing that broke 2024 Flash. No, he also had to know that Caitlin Snow became Killer Frost, that he failed her, that Cisco lost his hands to Killer Frost, that Wally became catatonic after a fight with Savitar, that Joe blamed him for not being there…

By the time 2024 Flash trapped Savitar, he was completely alone, and he was so broken he didn't mind staying that way.

Of course, Caitlin felt sympathy for the 2024 version of Barry. It wasn't actually his fault Team Flash decided to favor him over Savitar, so she didn't hate him the way she hated the others. The thing that did anger her was that he chose Iris West over her. He couldn't give her the thing that she always wanted: his love.

In the past, Caitlin Snow told herself to just be happy that Barry found happiness with Iris. He'd been supportive of her past relationships, her marriage with Ronnie, and had never gotten angry or upset about it. She had to return that favor. Caitlin had been too slow. Iris West had beat her to it.

But now Iris West was gone and the version of Barry out of the speed force never wanted to see her again, and she was okay with that. Because she was in love with the version of her who became Savitar, the version who chose her over Iris West, over everyone. The version who showed up in her cell at Iron Heights years ago with an injured leg and a broken soul.

And now she was going to free him. They would be reunited forever.

She knew it would take time to execute her plans. She had to find Tracy Brand first. Once she did, she forced the woman to alter the Speed Force Bazooka to do what she wanted and hissed at her that if she warned anyone, Killer Frost would kill her and everyone she loved.

Then, Caitlin got her hands on a quark sphere, on Barry Allen's DNA, and set it up to get him out.

Savitar came out of the Speed Force, clambering to the ground and shaking there, in his suit.

Killer Frost moved cautiously, but quickly toward him, crouching down beside him.

"Savitar?" she asked, her voice concerned.

His head snapped up, looking at her as he shook. "Caitlin?"

Killer Frost's blue lips almost cracked a smile. He'd almost called her Caitlin. She remembered when he had told her that she wasn't Caitlin and he wasn't Barry. Perhaps she still had a chance to change that.

"Come here," she said, "get out of that suit and come here."

Savitar phased out of the suit and melted into her arms, still shaking from whatever it was he saw in the speed force cell. Caitlin held him just as she did when he visisted her as a time remnant.

"I love you," he whispered.

Killer Frost's heart felt like it was melting. "I love you, too, honey."

Caitlin got them back to their old lair, the suit trailing along behind them at Savitar's mental command. How he managed to hook it up to his neural system, she still wasn't sure. Perhaps one day he would tell her.

The two of them sat in the lair for a long time before he finally spoke.

"You freed me."

She nodded. "Of course. I love you. I'd never leave you there so long as I had a way to get you out. The second I got out of Iron Heights, I started planning to free you."

"That breaks the time loop," he said. "I'm free, which means I never have to force Team Flash to free me in the past."

Killer Frost froze. "Does that mean… you're not going to fade out of existence, are you?"

Fear filled her veins. She couldn't bear the thought of losing him, of having it be her fault he was gone forever.

She didn't want to be alone in the dark. She wanted to be in it with him.

"No," he said. "Because we have this."

He picked up the Speed Force Bazooka.

"What about it?" she asked.

"We can alter it. We can change it into an intradimensional quantum splicer. Then, I can open a time portal exposing the Speed Force, you can shoot me with that, and I'll become fragmented throughout all of time. All of us will be aware and connected from the Big Bang until the end of time. We will rule forever."

"Together?" she asked, excited and impressed by his plan, but confused on how they would both rule if she wasn't immortal as he would be.

"Of course," he said. "Anyone can become fragmented throughout time, Frost. We will become fragmented."

"And, you can actually alter it to do that?" she asked.

"If we had limited time I probably wouldn't be able to finish it in time," he said. "We would have to go back to Tracy Brand or go to someone else with knowledge of what it's supposed to do. But we have much more time than that. We have days, not hours. I can alter it, Cait."

She smiled at the use of her nickname.

"And then we truly become Gods," she said, her grin widening.

"I told you I had a plan B in case I failed to kill Iris," he said. "We're simply going to use it now."

"And Iris won't come back to life?" she asked. "Getting you out of the Speed Force won't bring her back because you don't go back to kill her?"

He shook his head. "Time travel is a tricky thing. Time is malleable, as seen when one gets near a black hole and time passes differently. What you do in the future, changing it, doesn't always affect the past, same as what you do in the past doesn't always affect the future. The more you time travel, the less the rules apply to you."

"I'll take your word for it," Killer Frost laughed. Of course, she'd heard about time being malleable around black holes, but she'd always found the topic of time of it confusing and inconsistent. "Time travel was never one of my favorite subjects."

"No, that was biochemistry," he smiled.

Her eyes lit up. "You remembered."

"I remember everything," he said.

"Yes, but you remembered that miniscule detail," she said.

"Nothing about you has ever been miniscule, Cait," he said, placing his hands on his shoulders as he gazed into her white eyes. "You have always been special. I don't know why I never saw it before, why the other version of me never will, but it's the truth. You are the most amazing person I have ever met."

"Perhaps you would have realized it sooner if you never met Iris," she said sadly. A part of her did wish that becoming Savitar and Killer Frost didn't have to happen in order for them both to finally see the truth, but then again, she was just so happy that they were finally together.

"It is true none of this would have happened if it wasn't for the codependent relationship she forced on my younger self," he said with a nod. "If only I'd seen it, but of course, she'd been creating it since the time we were eleven."

"You shouldn't have gone to live with her," Killer Frost said.

"I didn't have much of a choice," Savitar said. "But in Flashpoint, she didn't even remember my name. If I had lost my memories of my other life, of her, eventually I wouldn't have been in love with her anymore. Perhaps then I could have met a certain ophthalmologist, the person I was actually meant to be with."

Caitlin laughed. "If only."

"We're going to be together, Cait," he said. "For all eternity, it will be you and me, at the beginning and at the end."

"What will we do throughout all that time?"

"We'll live countless lives together," he said. "We'll see the future, we'll see the past, we'll escape the destruction of this planet and go to another one, we'll live all the way until the last molecule stops vibrating and plunges the universe into heat death."

"Heat death? Will that even manage to kill me?" she chuckled, thinking of how as Killer Frost, she never felt heat.

"No, it won't kill either of us."

"What do you mean?"

"The Speed Force said that it would be there when the last molecule stopped vibrating and plunged the universe into heat death," Savitar said. "It implied that it would continue on existing. We, my dear Dr. Snow, will escape into it together. We will live the rest of eternity in a place we will turn into our own personal Heaven—together forever."

She looked up at him, her eyes lit with the excitement. All she ever wanted was to spend the rest of her life with Barry Allen. The idea of spending the rest of eternity with him excited her in a way no one could ever possibly understand.

"What are we waiting for?" she asked.

Savitar stroked her cheek, smiling happily at her. He never smiled genuinely around anyone except her. She was the only one who got to see Barry Allen shining through underneath the darkness.

Perhaps one day, they would truly be Barry and Caitlin again. And even then, they would still be together.

Barry leaned down, pressing his lips to hers. Caitlin kissed back, her hands moving to run up his back and grip his shoulders. They wrapped themselves into the other's embrace, knowing that this was always meant to be.

It was always meant to be Barry Allen and Caitlin Snow.

The Flash and Frost.

Savitar and Killer Frost.

The God of Speed and the Goddess of Winter.

Forever they would reign, always together, never apart, until the end of time and after.

AN: Well, I hope everyone enjoyed the end of this. Killer Frost/Caitlin Snow and Barry Allen/Savitar/Flash will always be together throughout all of time, just as it should have been. The two of them would have been together if he didn't grow up with Iris and we all know it.

-SnowbarryLoverForever