So recently I met a guy at college in one of my club meetings. At first I didn't pay much attention to him, I didn't even know his name. a couple of days later he added me on Facebook and I accepted, so I added his number which was on the group chat. so he started replying to my stories and we started talking. so I started getting attached to him and getting used to talking to him. After a while he started talking less and not being the same as before so I convinced myself that maybe something is bothering him and I talked to him and asked him what's wrong, he told me he had problems with college and work and that its a lot of pressure. but since I started talking to him first he changed, he doesn't talk to me first anymore, doesn't sit with me much, and he changed in general. its really bothering me because he's the one who started talking to me in the first place and he made me grow attached to him and now he's not being the same. and recently I just feel empty because the days we spent talking were just great and now that we don't talk much anymore I feel empty and sad and that I have a lot of free time. I even cry a lot for no reason, on the days we don't talk I have this weird feeling , I'm also sad, and I get irritated by everything around me, yesterday I talked to him, but he was taking long to reply and he wasn't talking like he usually did. I feel like I should step back and get used to him being out of the picture and stop putting effort into this because he doesn't. Even if it hurts I'm gonna step back since this clearly wont work. What do you guys think ?