Was I sexually assaulted? *LONG STORY*

Just a brief background, I hooked up with a grill cook from my work in November. He hit me up a few times and would message me after but I never hooked up with him again just because I didn’t want to. A few months later I found out he had a girl friend while he was still trying to message me and have me come over. On Valentine’s Day his girlfriend came to our work bc she had found out he slept with me and another girl and it was a whole ordeal. He lives with 3 other people I work with so on Saturday night I went to their house to drink and stuff. HE IS STILL WITH HIS GIRLFRIEND. The whole time I was there he would flirt with me but I would brush him off and stuff because I’m not interested in him, but we are still regular Friends. It’s about 4 am at this point and 1 guy is about to go to sleep upstairs in his room, another guy is leaving so it would just be me and The grill cook. I was kinda of freaking out because no one said where I would stay and the only other girl here was asleep and I had no clue where her room was. I didn’t want to sleep on the couch bc the grill cooks room was right across the hall. So it’s just me and him in the living room trying to clean up a bit and then he gives me a side hug while I’m trying to casually pull away from him. He grabbed my hand and put it on his exposed penis and was making my hand rub him. I said his name and then said stop and tried pulling away again but his arm was still around my shoulders. I finally got away and countinued to clean up. Then he grabbed me and pushed me onto the couch and had his penis in my face, he had the back of my head and was trying to get me to put it in my mouth but I kept moving and trying to stand up again. It did go in my mouth for not even a minute bc he stopped when another guy came back downstairs. I went upstairs and stayed with the other guy until we woke up again. Me, the girl that was asleep and the grill cook were outside talking and stuff and it was ok. Then we were helping him take the tv back into his room and when it was just me and him he closed the door to his room and took the door knob off and kept it in his pocket. He kept trying to kiss me and then kept pushing me back onto his bed forcefully and would grab me from behind and pull me back towards the bed when I would go to the door. I was grabbing onto his wall bookshelf so he couldn’t pull me. I kept telling him to stop and to let me out. Then he started choking me and calling me names and stuff. I was kind of shocked by his behavior but it didn’t hit me until last night how bad it actually was. I just feel really awful now because I can’t say anything to anyone because I will be looked at as the bad guy for doing stuff with a guy who has a girlfriend even tho I kept telling him to stop.