If I have a male friend, that I prefer to going out to eat with and seeing movies with and all that jazz over the company of my husband, then there is definitely an issue with the relationship.
If my husband has a female friend, and he continuously wanted to take her out to lunch and to got to a country concert on the weekends, whereas I'm sitting at home alone, there is a problem.
I'm a tomboy. I get along much better with guys that I do with girls. But with that said, for the sake and RESPECT of my marriage/relationship, there are just some things I do or don't do, and even sacrifice, in order to keep my marriage strong.
I could not, would not, be in a relationship with someone that preferred the companionship of other women over mine. And don't give me any of that "platonic" mumbo jumbo. By all means, have female friends. Talk on the phone a few minutes every once in a while. If you work together, having lunch isn't that big of a deal. But don't go sheduling "platonic" dinners together or activities together, while I'm sitting at home with the kids. That isn't "platonic" no matter how much one tries to justify it.
I'll be the first one to admit I became really close friends with a coworker vet tech while at my former employment. I wasn't married yet, but was engaged. I realized that my friendship with this other guy was a bit strong, and I realized that there was a mutual attraction. So I backed off and cooled the friendship to a more coworker-type of aquaintance. Did I just throw away a friendship? No. I was responsible and respectful enough to stop anything before anything could start.
The thing about men and women is, that unless one of them is homosexual, there is usually an underlying attraction of some sort that plays a part in that bond of friendship-even platonic ones. And sadly, not everyone is smart enough (or willing) to back off when things start going in a different direction.
I'm all for having friends. But I'm also all for not sitting underneath the tree of knowledge staring and drooling at the apple hanging above my head (aka keeping onesself away from temptation).