Isn't it obvious? Your boyfriend is only worried about the bad influence your "girlfriend" might turn you into one of them, the casual sex, love today, dump tomorrow, smoke, clubbing. Personally i think he's sweet and you're lucky to have such kind boyfriend that actually bother to spend time worrying about you. It's true he's an worry wart, but he's definitely worrying for the right thing. I had the same case back then when i was dating my husband, i was once a wild girl too. Well good girl to begin with until i went to college, and met some new "girlfriends", my boyfriend (my current husband) and i were having long distance relationship, He's studying at one part of the world while i'm at the other. So we rarely talk because back then i was too busy with my "girlfriend", so i end up not replying most of his message leaving him hanging by his phone for days/weeks while my "girlfriend" brought me to go clubbing, shisha session, late night outing till 2am and even lied to him about my where about just so i can hang out (my girlfriends idea) Leaving him in the dark not knowing hows my condition, try to think how he would feel? Trying taking the time to think what your boyfriend sees in your friends, and why he doesn't like them. Everything in this world always have an answer to "why". I remember the time when my "girlfriend" told me ditch my boyfriend just because we're having long distant relation and it hurt so much. They even went through the trouble trying to match me with some of their ex boyfriends whom their main and only goal is sex through attempts trying to touch me "there" during our outings at cinema, clubbing and even swimming. So much for "supportive" girlfriend. I'm glad my boyfriend was the patience kind. When i got back during summer break, he decided to talk to me about it. He told me he was worried about me, not because i'm cheating, but the bad influence of those girls and what might happen to me out there in places such as the club (after hearing so many date rape cases going on lately), so We both did some agreement, i've decided to ditch my "girlfriends" and tried so change for the better. So we got married and we're both happy, no guilt no dark secret.