Need some advice and someone to talk to.

So I am just a causal open bisexual guy. I understand that find love is not easy and I have a question for all people in this experience. Did you ever get with someone you did not expect or wanted to get with them and they actually liked you? How many of you have had this happen? My story. So, this really hot guy, I am trying to find out if he flows that way without being blunt about it. I just hate having this feeling and not knowing what is the truth. I added him on facebook and I am waiting for him to add me. I have a feeling inside that it won't work out. Anyone have any advice?