My friend pissed me off today why?

Ok so I texted him after class that we should meet up to study for exams. 2 hours later he replies that he's at the library and asked where about am I? I told him where I was so I figured he would make his way over. I don't hear or see him for another 2 hours then he texts me back with some irrelevant stuff about the things we did last weekend.

I respond to that but then asked where is he since I looked at where he said he was an he wasn't there. 1 hour later he responds but again he still doesn't answer my question. Just more irrelevant stuff. I asked once again and 2 hours later I still don't hear from him. What the heck is going on? It sounded like he wanted to meet up me but he keeps dodging my question and that's the first time he's done it.

If he didn't want to meet up why couldn't he be straight up honest with me instead of stressing me out all day? Sorry for the long story this really annoyed me today.