[There's obviously a lot weighing on Kitty's mind. Either he doesn't understand the complexity of the situation or she is making it more complicated than it needs to be. Possibly a bit of both. Even though Chekov's confused, he thinks that he has it worked out well enough on his end to tell her what he wants. If she wanted to be in a romantic relationship with him, he wouldn't able to refuse. That isn't in the cards, though, and he can accept that because it's not what he wants most.]
I want to be your close friend. [He only moves her hand so he can give her a hug.] When I said that I would be happy as long as that was true, I meant it.