my gf and i have been goin out for 7 months. shes 20 years old and has 5 partners before me. I am 22 and i havent had any partners prior to her. her past history bothers me a lot sometimes and i am just starting to get over it. her roommate said stuff about her and how my gf is a slut and stuff...also before she and i started going out she was hooking up with my best friend, she says no sex occurred, but he told me they had sex and gave some details. this is a major issue for me, because my best friend and i are no longer friends around the time they were hookin up. i dont know who to believe...i trust my gf, but i know my bestfriend for a longer period of time and i know he wouldnt lie about that. i think she may be lying to me so that i dont get hurt and possibly leave her. i am her first bf, but shes still been with 5 partners before me.