Q.My friends and I went out a few days ago and we saw our friend's (who wasn't out with us) boyfriend hanging out/flirting with a girl. I went over to talk to him for a little bit to see if this girl would go away, but she didn't. At the end of the night, they left together.
I feel really uncomfortable about what I witnessed and don't know if I should tell my friend what was going on. He's cheated on her before, and she always takes his side. I don't want to lose my good friend over this. Should I tell her?