I know we're going to end up together now, but what next?

Just wait it out, let her make the move (about breaking it off with her boyfriend and being with you). All you can do is give her time and be patient - don't make her rush into anything, you don't wanna put any pressure on her. Just be there when she needs you and listen to her, and tell her you feel the same, but can't do anything further than hugging or anything like that for now because technically, she's still in a relationship. Tell her it's not that you want her, but you wanna be a gentleman and not just simply barge in into a relationship and say "alright man she's mine now" (I know you won't do that, I'm just saying lol). I actually read the whole thing and it's really sweet :) It really seems like you're genuinely her soulmate and not just someone she wants to cheat on or cus she's bored of her boyfriend or whatever. But facts are still facts and she's still someone else's, so I say you should maybe just wait or if she asks, just ask her to tell the boyfriend the truth. You don't wanna break anyone's hearts - her boyfriend is still human after all. You have to care about his feelings too, he might or might not still have feelings for her. I'm glad you guys haven't done anything like most people would. You really are a sweet guy :) Good luck!