Any one help me

me n my gf love each other a lot but d problem is that she gets upset very quickly if i mention a gals name to her.....n if she sees me talking to any gal then she loses her temper all of a sudden n then it`s real difficult to get her cooled down.....i know she loves me a lot n for this habit of hers i take it just as a part n parcel of her love for me but at times i feel real irritated n feel like shouting on her,,,,but just can`t do that also as i love her a lot n can`t nake her sad for even a sec.....what should i do?? v both have talked abut this at times but things have not worked out till now.....plz tell me what should i do.....