What do you call it when you feel something in between a friend-crush and a crush-crush (pardon my middle-schoolese)?

Like, when you aren't sure if that person's interested and you don't want to push them, but you still really want to hang out with them and talk to them and get to know them better, whether or not it's platonic? Because you DO really want to be their friend. Because you like who they are, and hanging out with them just makes you really happy. And at the end of the day, you're happy just being their friend. So you're fine with either outcome, so long as you get to talk to them. What do you call that?

I'm, uh, asking for someone. And an expanded vocabulary.