How to get over abusive past

I’m talking to someone new and I realized that I’ll apologize or get scared that he’s upset because that’s how my life was for everything in my past relationship. He called me while I was showering and I told him I would end my shower early and he said that it’s fine. His friend is going to come over to hang out. So I asked if he was upset and he was like genuinely confused and was like… bc you’re bathing?? No? I really like him and I know he’s an understanding person but I don’t want to ruin it.