Sometimes I mention my girlfriend in sets, and although it doesn't disqualify me I notice that it can prevent me getting to rapport. I guess the girls are thinking "if he has a girlfriend, why is he flirting so much?" On the other hand, if I already have some rapport it can help to make her more comfortable and open to me, especially if she has a boyfriend.
I feel that talking about my girlfriend doesn't build any attraction at all. Displaying my girlfriend might do that though but this is more difficult since she is overseas right now. I also noticed that I get almost no flirt messages on facebook now that I have set my profile to a couple photo.
Any opinions on how this should be handled?