Secrets: What happened in college that still haunts you?!

What happened in college that still haunts you?? "My coach hit on me during spring training and I ended up having an affair and he got in big trouble!" "I went to a scheduled appointment with the professor to discuss rescheduling an exam.. Walked in (I did knock) on the Prof having sex with a student in my class. Then he offered me an "A" to not say anything." "In college I thought my boyfriend cheated on me so I had a threesome with two of his best friends. Turns out he didn't cheat. He never found out but it haunts me. Especially since we are married now and see the guys often."