5x10 Significant Others

Takes place after the episode ends, Kate goes home and is thinking about what Castle ex-wife said to her about Castle. Kate thinks about what she really wants in this relationship with Castle.

Kate arrives home and just she on the couch and thinks about what Meredith said to her. How one-sided everything was between Castle and Meredith. How he was so unwilling to talk to her about his life. How she said he brush off something as simple as simple conversation about not knowing his dad. She remembers the look on Castle's face the previous year, when Sofia told him that the only reason he got access to her was because of his dad. She remembers the hurt and confusion in his eyes at the mention of his dad. He only brought it up once trying to find more information about his dad and if the whole he was a CIA agent was true.

She knew Meredith had cheated on Castle and apparently his unwillingness to open up led to her seeking someone outside their marriage. The only thing Kate can think about when it comes to how the relationship is between her and Castle is how open he actually is. How willing he is to talk about his past, even if she pushes, he doesn't back away, and he actually answers her.

Kate realizes in that moment, that despite how insecure she can be, she could never be jealous again of Castle's relationship with his ex-wives. Because what is going on between them is obviously much stronger than he ever had with anyone else. How much more she loves him because he does not hold back, how he has never held back when it came to her.

Castle and Kate have not been together very long as a couple, but she realizes that she wants so much more with Castle. She wants him to be her one and done. She wants to spend the rest of her life with him and she is pretty sure he wants the same thing. That realization does scare her a little bit, she's never felt so strongly for someone, she had never even felt this strongly about Will and she was sure she was going to marry him.

When she found out that his first wife had cheated on him, she had always wondered how someone could cheat on such a good guy as Castle. Now she understands.

The one thing she is unsure about with her relationship with Castle is what he said a few weeks ago during that sci fi convention, about how he wants the option of having more kids. Did she want that? She never saw herself as a baby person, never had even occurred to her. Castle was the first man she had ever dated who already had child. She loves Alexis and is astounded how someone raised by Castle could be so unlike Castle, yeah sure she occasionally sees little bits of Castle in Alexis's personality. She loved the father in Castle it's what made her fall in love with him to begin with. They are still getting too know the intricate personal sides of each other and she needs to let that take center stage right now. Maybe after being with him longer, maybe she will want that with him. Right now, she's just going to focus on being with Rick and forming a stronger bond with Alexis.