Search Results: how to stop being clingy

> 1 Month ago: Met him in my Uni's library and simply asked him if someone was sitting on the table next to him (he had his suff on it) then he didn't let me study because he was trying to talk to me the whole time.
> Very talkative but very nice, he's an older student (third year) and was giving me tips and reassuring me etc.
> Asked for my number and Facebook. I gave it to him because he's nice and he's in my Uni soo..
> He kept on being clingy ever since, always texting me non stop even when I don't reply, he comes in the library just for me (his words) and keeps distracting me >:( And asks me to walk with him outside the library but I refuse (I need to work!).
> Stopped going to the library, still texted me all the time "where are you?" " Are you going to the library today?" :'( UGH but I stoped replying and he stopped texting me for almost 2 weeks.
> Now he starting sending me messages again"Exams are finished for now, you're free, no more excuses" and he kept on calling me the whole day (didn't reply)... LIKE WTF? I barely talked to him and he's acting as if he's my boyfriend or sometihing! Smh


He's nice though and tries to sheer me up etc, but it's too much now. Don't want to be rude. I'm scared of telling him not interested then he'll say : Oh bless your heart we're just friends, I don't like you taht way. Lol T_T

I don't know what to do. I'm not the type to open up to people easily at all. Anyways this guy I met online knew me by my secrets first. And then we became friends. So we've been messaging each other lots for about two/three weeks and then for a few days he just stops... barely messaging me. And my little crazy self is missing him so much. I think it's because I let him in, I can fairly say he knows more about me than anyone I know IRL since he knew my BIG secrets first.

So I'm naturally nervous that something's wrong and I've asked him if he's ok, tried to give him space but I'm missing him all the while. I am unaccustomed to being clingy or needy so I don't want to ask him anymore. Part of my brain is now feeling like maybe I was too open... it's to the point where I opened up so much I almost expected that he would remain constant in my life, yess even though we've only been chatting for such a short time.

At the same time I could be going insane and he's just normal and I (with my typical overly self conscious self) am reading wayy to much into the fact that he's barely responding. And when he does... It's like one dry lifeless sentence as if the joy in speaking to me is gone. I don't think I did anything wrong... Not sure he's going through a personal issue? Am I crazy?