Since I can remember, the majority of my friends have been male. When you consider that I was pretty much a tomboy growing up, that makes sense. I've never had any interest in the make-up, clothes, shoes, shopping, guy-talk/bashing that the majority (not all) females are interested in. So, in high school I hung out with the guys in art, on the wrestling team, and all the neighborhood guys. Just how it worked out. Now, I have two close female friends and that's it. Generally, women are too competitive and hanging out with the guys has always been a nice relief. Being an overly horny and openminded about the issue, I tend to talk about sex, or anything remotely close to the topic. I have a feeling the guys don't mind that, lol.
What's interesting is I brought this topic up a couple years ago and inquired among all my male friends. Some of them said, yes, they have female friends, and while they wouldn't mind if they could get in their pants (including mine) they didn't pursue it. To them, if they wanted to go get laid they would've gone and gotten laid and not spent the time beforehand. Most said they preferred hanging out with me and my close girlfriend because we just bs'd around. We weren't into the "girlie girlie" stuff as most women or girlfriends were, and we actually talked, unlike their male buddies who spoke in few works and just cared about sports.
Now, that of course is just my experience, but like others have said, I think it's different with every situation and person. Both my partner and I are very open with regards to commenting on who we're attracted to, and he has no issues with me and my many male friends. I in return don't care that he talks with many females. Shoot, we all need someone to click with, and if it's of the opposite sex I don't see why it should be a problem. Then again, I have enough self-confidence to know that he can go out and spend some time or talk on the phone with the other women, but am assured he comes home to me. Of course, if either one of us were to slip down the road, I am quite sure our trust in each other would weaken and it would be a completely different story.
Alicia