You shouldn't flirt because if he already has a girlfriend, it's wrong to try to get him. Just treat him like a normal guy friend, and maybe you can subtly flirt with him. :)
he doesn't respect his girlfriend nor their relationship, and if you were to become his girlfriend, he would treat you the same way.
You don't.
he want your love and trust
You can't "make" anyone fall in love with you.
he will be nice to her and treat her specail from the other girls
if a gut doesnt think of you as a girlfriend but you are in love with him then get a boob job and show it off in front of him.
HiTherePal's Answer: It would be preferable that if a guy's girlfriend is pregnant, the guy should love her girlfriend. The girlfriend is going through some really painful stuff now, and she needs the guy to be with her to help her out, you know what i'm saying ;P? Some random dude's answer... oF CouRse nOt, altHoUgh it's really BeTTer if YoU caRe For HEr
try talking to him and do a webchat
if he is truly happy around his girlfriend and will do anything to be with her
To assure her of his love.
Treat her with respect, compliment her, be nice and happy, make her laugh and be an all around good guy - you can give her flowers and gifts if it is something that interests you as she would of course love it. ANSWER According to Robert A Heinlein, you should rub her feet
Probably but it just depends on the guy and if he likes his current girlfriend.