Should I tell his girlfriend he is a cheater?

[singtomewithglee]

So I just started talking to this guy but I know from my friends and some of his friends that he has a girlfriend. I looked on his facebook and found out it is true. He has a girlfriend and she is having his baby! Well he flirts with me and keeps trying to get in my pants and I know from my friends that he's doing this with other girls too. I don't know his girlfriend but I feel sooo bad because she is having his baby and is so excited and in love with him. Should I tell her or what do I do?

[Connor]

as bad as it sounds, i wouldn't tell her. Always, maybe he just wants a bit of attention from other girls but would never kiss them or go any further. A lot of guys flirt with girls even if they have a gf though the majority would never do anything past flirting

[Elizabeth Smith]

Wow normally I would stay out of it but if she is actually pregnant and he is actively trying to have sex with other girls, then I think this girl is in real trouble. What if he gets an STD, then passes it on to her? She could actually pass it on to her baby during birth. Many STD's have no cure, so this is a life sentence for a disease on two innocent people. Also, what if he gets other girls pregnant? Now they are thinking he will help support their baby, but he can only help so much with so many other girls all having his baby too. Lastly, she is in love and thinking they will raise her child together as a family, but it sounds like he has no plans to stick around and raise this child, so she needs to prepare now. She may be really angry you told her, but you need to show her proof. Don't get mad if she calls you names, just be understanding and tell her that when she is ready to listen, you will be there to give her more evidence and talk to her about what you have learned about him.

[Jay]

Based off what you are saying, this guy is not cheating. He's just flirting with other girls, which guys naturally do. Don't overreact.