"DUBT4k: Woman's Guide to Rough Sex and Cheating" is a very well researched and written guide by Jessica Valenti. She provides you with a very good road map to get your girl rough with a complete stranger, and explains what the right techniques are to drive her wild with pleasure. If your wife wants you to satisfy her in the bedroom, this video is definitely the one for you. The advice inside, and the techniques described will drive her wild with pleasure..