My crush 'likes' all of my Facebook posts?

Anonymous
Turned out a month ago that my crush from school kind of likes me too, he searched me up on fb and we have talked some and he 'likes' all my posts and all but that's all, he hasn't asked to meet or anything yet though he lives in my town. I've got a long distance bf-which he knows-but I have never met my bf and to be completely realistic I don't think we will meet this year either and I feel like our relationship isn't leading anywhere right now but my bf seem to think so though he is a bit older than me and should probably know better, but I also used to think our relationship was perfect but not since I got this "crush" and realized that it would be stupid to say no to someone because I've got a relationship with a guy I may not meet in years, who knows.
The boy from my town will most likely not talk to me very much as long as I am in a relationship since he is the kind of guy that respects that but I want to get to know him even better and I feel this is a big problem.. what do you guys think? how will he react if I try to show him in a casual way that I like him, and if he asks to see me someday how should I act with him? what does it mean that he 'like' all my posts? will he lose interest if I show that I like him though I am not single? thanks for any help
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and please don't answer my questions with more questions that is not helpful THANK YOU
My crush 'likes' all of my Facebook posts?
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