I don't think it's impossible of course ,but it's probably pretty rare. The only man I would consider my friend is probably my brother but then again, I'm not a very social person. I have seen men saying that they would never even consider having female friends. Well, that sounds pretty sad. I would want to have some male friends mainly because it is hard for me to find a female friend who is interested in the same stuff that I am. What are your views? Why wouldn't you consider having a friend of the opposite sex?