It is NOT possible for me.
That being said I got one female friend, but I had sex with her before!
you can be but come on....most of the time one person wants the other..i mean its simple biology...2 male lions are NEVER friends!
I have a heap of really good female friends, that while they are attractive, I'm not actually attracted to them. Nothing wrong with having a close female friend and I think it's pretty handy too. It's normally a lot easier to talk to a female friend about certain problems then one of the boys, you'll probably get better advice too haha.
In general I would say no for me. Not that I have anything against it, just that it hasn't worked out that way in my life. However, I have one that I've been friends with for 8 years now, that I am more than a little attracted to in multiple ways, but she's married and that's not ground I wish to tread on. That said, I'd rather have her in my life as an awesome friend, than not at all.
I noticed a couple fellas brought up having gay friends as well. Well, cliche or not, I have many of them. I live in a city where 40% of the male population swings that way, and it'd be pretty limiting to not have friends of that sort.
I saw my ex-wife (the one I divorced in March) a couple of weeks ago....I went to bring her some certified mail that came to my house. When I saw her, she asked for a hug. I obliged and we had a nice conversation. Her mother was there too, so it may have been a little easier to be friendly with a third party present. At any rate I am past the anger phase, but as far as exes, I can maintain a cordial relationship with the occasional "Hello, how's it going?" but friendship is highly unlikely especially with an ex....