First and foremost you need to stop cheating on your current boyfriend. Yes, you are cheating on him by constantly thinking of someone else, wishing he was this other guy.
Break up with him now before this obsession eventually blows up, which it will.
It also seems pretty obvious that this Super Hero dude you are infatuated with doesn't really pay you any mind. It's obvious that YOU are the obsessed one, and no matter how much you are "in love" with this guy he doesn't and never will feel the same way.
You don't know what love is, and frankly it seems to me that you need professional help before you start cutting yourself, or worse.
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