Feeling Guilty After Sexual Encounter

My ex sexually assaulted me numerous times throughout our relationship and it really fucked me up for a while. It’s been about a year since he dumped me so I thought I was ready to start putting myself back out there. I met with this guy and we started hooking up a few times. Then one night we’re having sex and I suddenly wasn’t feeling it so I stopped. I told him I wasn’t feeling it and that I’m done. He looked at me weirdly (could just be my imagination) and said, “you’re done for the night?” And I was like yeah.. and he was like, “are you SURE you don’t want to do doggy style?” and continued jacking off in front of me. I was immediately filled with all those same feelings of guilt and shame that I felt when my ex pressured me or shamed me. I know it’s a minor situation but it really made me feel bad. Then he turned away from me and ignored my existence, and he hasn’t talked to me since that day.