Oh no, I really wouldn't use the term "crush". That smacks of something juvenile to me. I mean what I say, romantic elements to mutual affection. People can have sexual chemistry with friends. And making a statement like "it wouldn't go past friendship potential" is an opinion, so please don't make it sound like an incontrovertible statement. Also... I really don't see how it could be managed better if they forgot who they loved and moved on. That is far more OOC than secondary relationships.