My best friend: The pimp. Help?

My best friend is a guy. He had a girlfriend 6 months ago, they were dating for a year and half. I think he's deprived of physical contact.

He's always with the girls. He never used to do this before. But he has his arms around the waists and on the hips of multiple girls within short amounts of time. That's usually not a problem, but he does it in a way that looks intimate. I can't approach him with this either...he always thinks I'm jealous (idiot -.- lol ew). It's just gross the way he does it, if you know what I mean. Stands too close and touches where he probably shouldn't be.

Getting a girlfriend would help....But he's got no chance of that at the moment. Why do you think his last relationship didn't last? He's kinda lost a lot of the maturity he used to have. I can't help him and he won't listen to me about it.

He's really....gross...please understand I'm not being overprotective or jealous or anything....it is actually a seriously wrong all over the girls thing. He doesn't even know this chics very well.

I'm not the only one who thinks this of him. Some of the guys and girls agree with me, he's overdoing it a good stretch.

How can I help him without making him brush me off or make up excuses or offend him? He gets so ignorant.

Help!