yea agreed with Fresh. Knize nailed it like a 2 dollar hooker. Women can be friends with men, but men have at one point thought "what are my chances with that female." For the married and taken men out there, seriously you have thought "If I was single..." and it usually ends there.
For a guy to be friends with a lady, he must realize he has no shot at her, due to being married, in a relationship, shes not available, or interested, etc. Then they can be friends. But seriously, if you would ask your guy friends "Hey if you and I were both single, and it was the last day on earth, would you and I have sex?" Every single guy would be like "Wait, so last day, Im not married/engaged/in a relationship, and its hypothetical? Then yes I would have sex with you..."
There may not be any sexual tension in the relationship, because tension grows (hehe) from a guy thinking he has a shot. So guys in short would totally sex up any female if they could (could being not married/engaged/etc).... and this is coming from a guy who is engaged and in deep love and would never cheat on her... and Knize you are not allowed to sleep with my fiance either, just because shes not my wife yet.....