A/N: This takes place years in the future and is therefore labelled fanfiction of the highest degree.

Continuing the trend I started with Immutable, I can safely say that earthbenders don't change. Neither do green-eyed people in general apparently. But water is the element of change, and so Korra changes.

Delta is: The fourth letter of the Greek alphabet, as there are four in the Krew; a triangle, like the love triangles causing this story to come forth; and the symbol for change.

I'm starting to notice a trend. Every green-eyed character fails when it comes to love. Toph. Lin. Bolin. Asami. What do the creators have against green eyes?

Can you think of a single major green-eyed character who was successful?

He finds it bitterly ironic that he's the best man.

If he were actually the best man at the wedding, maybe he'd been the one with Korra's arms around him. The wedding dress, overflowing with white ruffles, doesn't become her: He prefers her the way she usually is, messy, wild, untamed.

But Korra's changed. So has Mako. He guesses that love makes compromises, that being meant for other means evolving into the person the other needs. He couldn't change for her. No, it's not that: She didn't give him a chance. When he saw that Korra wanted his brother, he let her follow her heart, waiting for Korra to realise that Mako's a jerk, that his brother will never let her dominate, that Mako will bend her.

But she's changed now. Accepted it. Submitted.

He can't stand to watch it, this insane rodeo of love, the wild stallion broken, the formerly proud wolf horse trampled underfoot, fitted with a saddle, and ridden off with a bit in its mouth and a whip at its back.

He can't.

As the reception begins, he stumbles as though in a dream, the I dos and I love yous playing over and over in his mind; he loosens his collar, gulps down air, drowning in the people, the music, the laughter.

He doesn't expect to see her.

Out on the balcony, she's hovering away from the festivities, her silhouette black against the moon. Somehow he recognises her, and as he nears her, he notices the familiar raven hair, her low-backed dress reminding him of the swimwear she wore when Mako dated her. He hasn't seen her in years, but nothing's changed.

"Hey, Asami. Some night, eh?"

She looks at him; in her eyes he gazes at the reflection of his own broken heart. "Hello, Bolin." So formal, so polite, hiding the hurt inside. "Send Mako my congratulations. You must be proud."

"Sure." A blatant lie. "It's not every day you watch your brother waltz away into his happily ever after, right?"

"No, it's not." He can tell she's studying him; he studies her in return: Beautiful, kind, an heiress. A potent combination. But not for Mako. "So why don't you seem happy?"

A faint breeze stirs her hair, uplifts it softly. He considers fibbing, but there's no point. Not to her.

The confession refuses to come out at first, buried under a deluge of lies he's told and fences he's erected, anything to escape. It worked for years. But not tonight. Never tonight. "I love her." He swallows. "But I'm over it now. Accepted it. Waved the white flag, whoo."

"Well, I haven't." She casts her gaze down into the open water, the waves in time with his heartbeat.

Even after all these years, he can hear the unspoken words dropping between them, each a stone crushing a golden globe.

And neither have you.

Even after all these years, she hasn't changed.

And neither has he.

Mako has.

Korra has.

But he is unbendable.