His roommate hit on me and now he’s distant..

This guy (mark) and I have been very flirty with one another for a long time- though we’ve never had sex.

When my house ran out of oil for heat, he invited me to stay at his house and we cuddled, made out, and laughed. On Friday last week, he was throwing a very small party for his friends birthday party. Beforehand, however, he messaged me reminding me he doesn’t want a relationship. Which I understood. He just got out of a long relationship this summer.

However, his extremely attractive roommate was there and we were all drinking playing beer pong. His roommate was my partner and kept being handsy with me. I saw Mark look over and stare at his roommates hand, which was placed on my hip, and then look at me and look away. His roommate also kept flirting with me verbally and physically all night. Mark left early- which is weird for him.

A couple of days ago I had to go to the ER and I posted on my private story commenting on what happened. He didn’t ask me if I was okay, he didn’t message me at all. Which is also very strange.

I’m not dumb- I know he doesn’t want a relationship with me- but, he also didn’t try to sleep with me, just cuddle and make out and kiss my nose and my forehead, he used to take care of me when I got too drunk. I can’t help but think he’s mad about that night. But how is that my fault.

Thoughts?