Just a couple of cents.
A long time into "before" I had very few hand-picked male friends and lots of male acquaintances - mostly due to shared hobbies. Once You drop out of that particular hobby, as per rule You loose all the people associated with it. I never really tried to develop a close relationship with females, because when we tried and succeeded to build a sort of friend relationship, they always said things which worried me (like, me not being like other guys and feeling safe around me) and at the same time I always had to fight spontaneous urges downthere, which made me feel dirty.
Now, I have made a couple of very close, best friend relationships with women. Yet, I have been able to preserve the closest male friend I have ever had. And I intend to keep matters the way they are and not focus on genders - we are all human beings in the end and if You find a soulmate, then it does not really matter to which camp he or she belongs. Have to admit, that our friendship dynamics has changed dramatically and there are things he will never offer me to do anymore and treats me more delicately, yet annoyingly paternalising at times. Sometimes, we mock each other a bit, but now it is mostly gender based humour. In the end, I believe that there are many versions of frienship, and if people are willing to preserve a valuable relationship, then they can figure out the mode which suits to them, no matter what.