A bit of backstory but I am on my third marriage, and my first husband and I share a teenage son, but he is remarried and has more children with his current wife.
So you can fully appreciate this, understand that his wife doesn’t like me because she thinks he’s still attracted to me, and him and I do not like each other. I’ve always tried to be civil, but he is still sour I left him 10 years ago.
I’ve caught him looking at me here and there, and I have made a point to tease him over the years just because it’s funny to me.
This past weekend, I went to drop off our son at their newly built “dream house” and when I did he wanted to give me the grand tour while his wife was making dinner and our son played video games in his room. He took his time and was half bitching the whole time about his wife because it had been his birthday the day before and apparently they haven’t had sex in a long time. I thought it would be funny (because I looked cute that day) to tease him and flirt to be mean. Pushing my tits together, walking in front of him on the stairs where he could see a bit of my ass under my skirt, etc. You get the idea.