Should i back off and leave him alone?

Well.. my boyfriend and I have been together for 7 months, we've had a crush on eachother for 3 years though. Before we went out, I was never really jealous if he went on a date with another girl, or if I saw him checking out other girls, and now that...

we're dating I never really had jealousy problem. but now.. WOW. I know he'd never cheat on me.. but it scares me when he talks to other girls because I'm afraid of loosing him. but he's the same way with me. I have A LOT of guy friends, I just get a long better with boys than girls, and he always gets mad/sad when he sees me with other boys.. but anyway.. I feel bad now that I'm starting to get jealous.

is this a bad thing? I trust him more than anyone else, I just don't trust those slutty girls he talks too.

I don't want to come off as a crazy jealous girlfriend, because I'm not like that at all..
but what should I do? should I just back off and leave him alone? or talk to him and tell him how I feel? pleas help.

Well keep the bond tight...how?
Well don't let it bother you.
He'll find you a lot more attractive (meaning he'll like a lot more) if you act as if him talking to other girls does not bother you at all. Even though it may, just brush it off and think to yourself, he loves me, I know he does. So why am I trippin'?
LOL
If he talks to other girls in front of you and behind your back...really, there is not problem there, trust me. BUT, if he doesn't talk to those 'slutty girls' IN FRONT OF YOU, then that's where you need to worry.

That's when you have reason to confront him and talk about your issues.
By IN FRONT OF YOU...I mean, that if those same exact girls walk by and he doesn't say a word, then you have reason to worry. But if you not close to him and he does talk to them, then... confront him, when he's done talking to the girl(s) and tell him that you don't like what he's doing.
Make sure that the same thing applies to you...If your going to talk to boys...make sure you do it in front of him, that way he doesn't trip when you talk to them when he's not around. Hope I've helped... If not, if you need anything to be emphasized then let me know. Laters. =)