Here's a question sillyfish72: what are you looking for from this guy? If it's a "feel good" thing, can you feel good about yourself knowing that you are part of a lie that's hurting someone else (his GF)? Or are you looking for some sort of commitment? If you are, do you honestly think this guy is capable of a true, honest commitment? He sounds like a liar and cheat to me...

There's nothing wrong with a casual, consenting sexual relationship between two adults, but when there's a third person who is not aware that they are sharing the person they love, it's cheating, and an ugly thing.

Sorry to be so harsh, but I've been that GF, and it hurts like hell when you find out you've been lied to.