Totally. Every time I hang out with my guy friends, we womanize females something fierce. If there's a female within our field of vision, she's straight up gonna get womanized. That's a fact. We go around wearing shirts that say "Who Wants 2 Get Womaniz'd??" (we're too busy spending money on females to pay for all the letters) and if someone looks at us, we yell, "You got womaniz'd!" Male, female, whatever-- they're getting womanized. And the disses that come out of our mouths! You should hear it. So much dissing. We dis females, we dis funny looking dogs, we dis the Pope...we don't care! Then we eat a raw steak, wrestle an alligator, pass out for an hour, and start up the womanizing all over again.

Seriously, sometimes guys just want to hang out with other guys and make d--k jokes or whatever. "Unfiltered female talk" doesn't mean "let's go hit on some random ladies and talk sh--t about our girlfriends." It probably means he wants to talk to his pal about his relationship, just like you do with your girlfriends. 

The main difference is, he might only talk about his girlfriend for a little while before the topic changes to his fantasy baseball team or a new microbrew beer he just discovered or the jerk who cut in front of him in line when he went to buy the iPad or the awesome new Iron Man 2 viral video where you can totally (maybe) see the Avengers logo for like a second. He's probably not going to dissect every little thing about your relationship the way you do when you're having relationship talk with your gal pals. Or maybe he will, if he's the neurotic type. But all guys talk about their relationship with friends to some extent, even if it's as simple as, "How are things going with Beth? Good? Awesome. Do they have potstickers here?"

So relax. Let him go out and blow off some steam. As long as he doesn't come back reeking of perfume with a cell full of new digits, there's nothing to worry about. Don't presume the worst about people. You'll be a lot happier.