There's this INTJ guy I've been talking to for a few months. We had these awesome long conversations, we used to sit in the library and talk for hours about history, philosophy and stuff like that. He also seemed to open up about his emotions, past experiences a lot (a thing he never does). It was fun and we flirted quite a bit too, he also used to mention how great it would be if we were in a relationship. From his body languge too it seemed obvious that he had some sort of feeling towards me. Atleast I felt like we were getting somewhat close. But recently out of the blue he has started to avoid me, he won't take my calls, won't meet me leaving me completely clueless. I'm starting to wonder if he was just fooling around casually and maybe I mistook them for something more serious. I feel like an idiot now. So I guess my question is should I just leave it there? I don't want to push him if he's not interested in the first place. Maybe I should just stop trying talk to him altogether?