His mom hates me

Ladies, I need help. So I’m 18 and my bf is 17, and we have been having sex for a while. But so far, no one has found out. Last night I left several hickeys on my bfs chest, and his dumbass decided to sleep without a shirt on. His mom walked in and saw them and started calling him disgusting. And now I’m afraid that she will hate me. He isn’t allowed to hang out with me today because of it. How do I get her to not hate me for marking her son?

Please help me, I’m panicking. I don’t want a couple hickeys to ruin everything.