<human>: About 4 months ago I had this crush on a guy, let's call him B.,this crush was so massive that it gave me the courage to break up my failing relationship.

 For academic reasons, I'm not allowed to even befriend him (although we did become friends) not to mention be with him in a romantic way.
I know he has feelings for me because we spoke about it. He shows these feelings every once in awhile (all via messages, we don't meet up) and I do the same. However, he has a long distance girlfriend (lives in another continent) who he's visiting in four days. A while back he said he's going to break up with her but I'm terrified that he won't, and on his return he'll just stop talking to me or start hating me.
Really confused about the whole situation but I'm into too deep to just leave. Ideally, he'd break up with her and we'd have our little illegal relationship.
What should I make of all this? How should I act?

Can you give me the gist of the text in a nutshell?
<bot>: Fell for someone I can't be in a relationship with and who's already in a relationship. He says they are going to break up but I sense that they won't. Uncertain of what to think of act.