I ended a 3 year relationship because he was using a condom incorrectly.

We were having a conversation and he said that I should buy condoms because I wanted to have sex but he didn’t want to have sex. I went and bought a pack of condoms and handed them to him. He used one and we had sex. I wanted him to put on a new one because I had heard that you can’t reuse condoms but I let it go because I didn’t want to tell him how to do things. We had sex for a second time and that’s when I told him he should put on a new one. He said we were good which I didn’t agree with. I stopped having sex which made him angry and he said he didn’t know he would be sleeping with a teacher. In that moment, I realized that I had to end it.