Fwb/dating... Idk lol

So I met this guy and i just expected to have a one night stand with him as we didnt know each other and met at a party. Well afterwards he kept messaging [for months]. He never really says much but he does say a little. We both got out of serious relationships not to long ago. We recently met up again and hung out for 3 days. I stayed the night with him each night as he lives in a different state. We didnt really get much time to ourselves as we were around friends the whole time,but he was very sweet to me and helpful. He even bought me a flower. So before he left i slept with him again. Idk if its just an attachment im building or what... He messaged me alot for a few days then slowly started to pull away it seemed... And im pretty sure hes talking to other girls..

I dont really reach out to him he usually does the initiating. But im SUPPER nervous as to message him as i haven't talked to him in a few days and i dont kmow how he feels about me. Also i dont fully know how i feel about him. I think hes sweet but its hard for us to be open with one another. We have never discussed what we were as in a relationship.

I need help lol

Idk what to do or how these things usually go