Most girls I have dated feel the need to be late. I dont know if its a pedigree situation where they have to make an entrance and feel noticed.

Anyway, my ex, constantly late. To work, dinner, etc. I went out with a friend last weekend and we were and hour and a half late because she had to "get ready"

It's just something you come to live with. I usually tell them 10 minutes or so before the actual time or just stress extreme importance to be ontime. Usually my driving can make up for the time.... usually...