don't want to stop, but it is killing me...

I travel for my job. We have offices everywhere. Never fails that at least on girl in each location knows that I am single and wants to get busy after work. I am not great looking, but I can make the women laugh. and I play a couple of musical instraments. I know its wrong. but turning down new opportunities just isn't part of my internal make up. I am nice about it. No mean spirited actions, but I know some have started to care. they are out of my league. This can't last forever....