This happened to me.
Summer fling while I was in college. Hooked back up after I graduated. The first time I immediately felt the difference and stopped. He said it slipped off. He put another on and then as he was penatrating I saw him fling the condom.
We were in my parents house and I couldn't act as crazy as I wanted to. Plus my mother couldn't stand him and it would have been a big to do.
I literally placed my foot on his chest and pushed him off of me.
Told him to get the heck out.
Saw him years later and I think he may have had hiv or something. There were rumors.
I try my best to avoid him when I see him at home. He always makes an attempt to speak to me.
Never ever.
I recall him laughing on his way out the door. He thought it was funny. At the time I thought he was trying to get me pregnant. Condoms have been my main source of BC. I always have issues with hormonal BCs. He knew I wasn't on the pill.