Confused?!

So There is this guy in two of my classes that I like a lot. I decided to talk to him because he started flirting with me and now I like him. When we talked he was nice and everything but when I told him I wasn't a virgin he became different. He isn't a virgin either and he said he only dates girls who are virgins. So later on he got a girlfriend and she dumped him a week later. Then we were in class and some kid was picking on me so he stood up for me and texted me after school. Lately he's been trying to talk to me again and he's been flirting with me all over again and I don't know if he actually cares about me or just hanging me around when he's lonely. I really like him a lot but I don't know if this is good for me or not.