My bf fucked me in front of people when I didnt want it

I was at the park with my bf and there were quite a few people around. He started getting really horny and was rubbing his dick under his shorts. He was kissing my neck and I pushed him back because people were starting to look. The thing is, I have told him to do what he wants with me whether or not I want it too. He started touching my thigh and I told him to stop, but he moved to reach up my shorts instead. I told him to stop again but he pulled my panties to the side and was now openly exposing me. He started rubbing my pussy while people could see and I pushed him back again. He then pushed me back so I landed on my back and yanked my shorts off. I tried to grab them but he spread my legs (hes way stronger than me) and started fucking me right there. Around 20 people saw this, and no one said anything, even though I was telling him no. A few people started recording and there were a few guys who just watched the whole thing. Eventually he pulled out and came on my face. It was so embarrassing. He made me sit there with cum on my face for like a half hour after that.