Nice is whatever the guy thinks it is.
I wouldn't say that. In guy->girl relations, as to whether he's a Mr Nice Guy or not, it's more what she thinks it is, if anything.
Don't except [expect] something you cant give. Isn't that what men ask of women?
I think the problem with Mr Nice Guy, is that he gives a lot -- and doesn't get anything in return. It's frustrating, as Mr Nice Guy isn't expecting an equal return -- but just Something. Some real Like, etc. Mr Nice Guy will finally get some balls, but not in a good way, when a gal Does keep going out with him for a while, and he still gets nothing. Anyone would and should be frustrated, but Mr Nice Guy never/hardly getting anything in return blows his lid out of frustration. It's not what Grandma told ya, Bobby! Girls aren't into a pushover who lays out the red carpet and wants to give-give-give, like a fish jumping out of the water into a gal's boat asking to be grilled. Dating Value goes down.