Ok i've been dating my GF for about 2 months. My GF told me though there a guy in her classes who has been telling her "ohhh.. you deserve better" then leaned in to her and said "oh I love you and I was going to tell that to my girlfriend but, I wanted to tell you". I then told my GF I was going to talk to him but she insisted not to. So how do i counter the BF destroying he is trying to do despite him having a girlfriend too also his girlfriend cheats on him a lot. I'm not sure if physically confronting him would seem insecure to my GF though so any advice would help?