Doesn't matter.Well typically this is true. But that doesn't mean she will wait for you forever. If you don't make a move on a chick soon enough, eventually you'll just end up getting friendzoned the same way a nice guy does. Like I said, she will eventually forget about you and move onto some other guy who WILL make a move.
I've had situations where I was friends with a woman for years before sleeping with her. I feel no urgency with women. I will make a move when I feel like it.. not when she wants me too. And if that makes her lose interest then she was never that interested. Its really that simple.
When you work around what women want you paint yourself as the lower value person. The higher value person has no urgency to do anything. The urgency is for the lower value person.