I think it also helps if you know it's just going to be a servicing before you act on it. The truth is for most the act of sex is something that most consider to be apart of "Love" so a one night stand leaves them feeling guilty as they worry about the others feelings and their own. To me SE is Just that sex it has nothing to do with wether you love a person or not it is a primal urge an itch if you will and one that needs to be scratched. I was reading an article today actually on a study as to what arouses women most needless to say the outcome while to me was not all that surprising but to most it would be. I have attached the link for those interested.
http://www.theage.com.au/national/bi-the-way-what-does-push-womens-butto...