Okay, I'll just go ahead and paste these links. Sam Vaknin can be gross but informative. This is basically what you'll get. They will withhold, and don't care how it was for you because many prefer onanism over the real thing anyway.
[samvak.tripod.com]
[blogs.psychcentral.com]
[samvak.tripod.com]
[blogs.psychcentral.com]