/feels/ - Advice & Venting

He was flirting with a boy in my class last year, but he wasn't clear about his intentions. What's more, he once turned me down for an outing and seemed to want something casual only. This year I got a boyfriend, although I was also flirting with this boy last year in a pseudo long distance relationship. Well, I made the mistake of allowing my boyfriend to move in and study at my same university. And living only a few feet away from this one. This guy in my class is a guy seemed annoyed with me. He would "stalk" me on Instagram (he would upload things in response to mine within minutes) and would throw hints at me making fun of my boyfriend. All this shitty situation already had me tired and added to problems with my boyfriend (he was very jealous, controlling and physically intimidated me, also my family and friends disapproved of the relationship) I had to break the relationship with him and I ended up too bad emotionally. Then the second semester I met my classmate again and had to endure his attempts to flirt with me again (since he was one of my few friends in the class), but again I noticed that he only wanted something casual. At that point I had to suspend my studies because the stress and anxiety was too much. Putting up with this guy in class and the other one meters away from my university in a passive aggressive attitude, plus having taken several subjects…. Well, I finally deleted contact from the guy in my class because I honestly wanted some peace, but I think he noticed and again started throwing shitty hints at me and since I should probably still see him sometimes, I decided to make peace at him and tell him I liked him a little bit, even though I deep down didn't want a relationship. I just wanted him to be straight with me. He at first tried to lie to me by telling me he never liked me, then he said he did but not anymore. Although he had recently "told" me about a dream with the girl he likes. Anyway, we agreed to be friends. Then he said I was physically attractive and in a hug I asked for he caressed my bra strap for a long time. And when we said goodbye he tried to steal a kiss from me. What is wrong with this guy, why are men like this, don't they realize their shitty attitudes towards women, am I the problem?