I think Old Timer is serious and has some valid points.
A guy I work with was in a rock band as the lead guitarist. He scored a lot and he told me the key was to just get the girl trapped against a wall and tell her that he was going to F her brains out. Maybe that only works with girls in their 20's and if you are a rock musician.
I know what does not work - begging or asking for sex. A guy needs to run the sex and romance department.