Is he bullying me or is he into me? (Or something in between?)

There is this guy at my University who has been in most of my classes for the past two years…
We have never talked to each other and anyway, he is constantly surrounded by girls.
He is extremely good-looking, so one really cannot help but notice him, and he acts like he knows it, too.
He might be gay, but then again my gaydar is not very good (I am just thinking it because he is constantly surrounded by 10+ girls, who also spam his Facebook with how cute he is… and because his laugh is kind of effeminate).

Anyway, so I have noticed a few things that might be entirely a product of my imagination, and again others are not.
He really wanted to get into a class I was in, but didn’t get in (arguably, many of his friends were there too, which is probably the reason), and he’d wait in front of the door until class was over (probably also for his friends). I noticed he had a motorbike, and I always got picked up with one from my ex, and I’d see him staring after me, pretending not to see. Again, this could be in my imagination.

One day, I would read a magazine before class, and I was really deep in thought, until I started feeling odd, and when I looked up, I saw him, circled by his girlfriends, openly looking at me and pointing at me, saying “look what she is reading”. he didn’t even talk directly TO me, he was talking ABOUT me, while I was there. I don’t see the point of him pointing it out either, since I am sure other people read as well.
Another time, he’d sit three rows in front of me and would just turn around and stare at me. Plain out stared at me and didn’t care that I or anyone else saw. I found it annoying and perhaps sort of cute, so we just did a staring contest, me looking grim, him looking, well just looking.
Another time, the professor would say “the only person writing a halfway decent exam was [insert my name]” and what did he do? He would say my name when everybody went quiet and then laugh. Disclaimer: I have a non-funny name.
Only two months ago, I took an exam and was surprised to see that he was taking it as well. So when I handed it in, I had to pass him by, but of course I didn’t look at him, so he wouldn’t even remotely think that I liked him. So when I walked back, I pretended not to see anything either. I just looked up because the teacher was yelling his name, and when I looked up to look at what was the matter, I saw that he was still staring at me and not at his exam, and I briefly stared back at him and the professor started to grin. I am not sure why on earth he is staring so much and why he would feel the need to be so weird. I kind of think he is trying to bully me, or why else why would he do those weird things for everyone (including the professors and his hoes) to notice? I think if he were genuinely interested, he’d talk TO me instead of talking ABOUT me, and he would also not stare as much. Some help here, please.