Random hookup...

So, I worked at this place and this dude used to work there too before I got there, then he got laid off. I started working there and he was always around the area hanging with his friends, so I saw him every once and a while and talked a bit here and there. Hardly knew anything about him though. One night, I’m getting off work late and he’s there and he asks me what I’m doing and if I have plans, and I’m like nope…so we hang out.

We go to the beach, and he starts getting really flirtatious, and tells me to make a wish at 11:11 and later asks me what my wish is, and then we made out on the beach and stuff. I thought he was being romantic and a little rough, because he threw me against the wall and made out with me. Then, we left to go meet his friends and basically I parked my car in a random spot he told me to, and we hooked up in the backseat…just oral was as far as it went, but he was pretty violent during it. He scratched all over my back, bit my neck, ears, and shoulders…and I still have a bruise and it’s been like 7 days. Anyway, he stayed at my place that night and when I asked him what I should tell my roommates about who he is…he said just to say he was my boyfriend. The next day, we spent about half of it together, then I had to go to work, and I didn’t hear from him until I texted him a day or two later asking if he usually doesn’t talk to girls after he hooks up. He said no and that his mother was sick, so he was busy with that. That night he showed up after work and gave me a hug and told me to text him later, but that’s the last I heard from him. It’s bothering me, because I don’t randomly hook up..EVER. And he seemed so interested in me and he was so romantic, I just don’t understand. Any advice on how to get over this or how to deal with it in general? Sorry for the essay.