This is my true story. I have recently turned forty years old. Last March I married for the second time in my life. My wife is thirty eight and a beautiful and wonderful person. My last marriage ended because I couldn't keep my dick in my pants. This time I vowed that I would change. Well, so much for that. My wife has a niece who we will call Ashley,who is twenty years old. She is very cute and has a plump body with huge tits and a round ass. She is a natural flirt and has the sexiest personality that I have ever encountered. Anyway, this past June, my wife asked me to go pick up Ashley at a party nearby.  Ashley had been drinking heavily. She had just ended her engagement because her fiancé wanted a Vegas wedding instead of a traditional one. I picked her up and headed back to me and my wife's house. Ashley insisted that I take her to her apartment instead. I called my wife and she told me just to go ahead and take Ashley home. Before we get there, Ashley puts her hand on my leg and starts moving it towards my croch. I protest and ask her to stop. She starts laughing and tells me to stop pretending. She also says that she knows that I want to fuck her. I try to deny the accusation but to no avail. She unzips my pants and frees my rock hard cock. I had taken a Viagra about two hours earlier and planned to fuck the daylights out of my wife later. But, Ashley had other plans. She moved her head into my lap and started giving me the best blowjob that I have ever had. I tried to hold back but I couldn't. I emptied my load into her mouth and she swallowed every drop. I felt like shit. What was I thinking? Ashley looked at me and promised that she wouldn't tell my wife. By the time we arrived at her apartment, I was rock hard again. I walked her into the living room where she started messing with my pants again. She strips butt naked and lays down in the living room floor and tells me to fuck the daylights out of her. Oh what the hell...... I pull my pants off and get in between her legs and start pumping her like a mad man. Right in the middle of our session, she tells me to pull out when I cum because she has stopped taking her birth control. A few minutes later I feel my shaft begin to tingle and I pull my cock from her soaked box and jerk off on her enormous tits. Since that night,we have fucked seven more times. I know eventually my wife will find out. They always do. I feel so ashamed because I really love her. I guess I'm just a cheating son of a bitch who is destined to be alone because I can't seem to change my ways. Does anybody else out there share the same problem?