yes and no. when I was a wee one in, lets say in collage, my gal pal cheated on me, so I had sex with one of her friends because I knew she would find out about it. and she did. and broke up with me over it. she cheated first, but we were still a couple. so I revenge cheated, I guess? still, makes me feel kinda shit now as an adult. but she did it first. not that that's a good excuse. still to this day, she does not speak to the girl I did the deed with. even though my ex and I have become friends again. weird.