You seem to have a surprisingly immature attitude towards the situation. If you like him, and he seems to like you, then talk about it with him? It's obvious you want the relationship to become something more than just yoga and sex, and you keep posting about your feelings on here. But why don't you talk to him? It's him you should sort this out with, not us.
You also seem to be pretending to yourself that you don't want him as a partner, but rather just as a FWB. And then keep complaining here when it's not "going according to FWB rules", when in reality it's obvious from your posts that it's exactly the way you want it to go. I don't mean this in an offensive way, but seriously, do something about it with him.