My sophomore year in HS, my best friend (male) started dating one my oldest friends, a girl I who had been one of m best friends since elementary. We hung out in different groups in HS, but we still talked all the time. Anyway, he started cheating on her with a couple of girls from different schools. I knew about it, and didn't know what to do. One day I finally hinted that something amiss was going on, and eventually she caught on and found out. They split and it was a huge mess. To this day, my friend doesn't know I told her. She kept it a secret too, thank goodness
God help him if he finds out that I'm not