i've been married for about a year now, but i still think about my ex girlfriend's sister when i jack off. she lived a few houses away and would come over during the day while my girlfriend was at work, and we would fuck for hours. she was the hottest girl i've ever been with, including her sister, my ex. by the time we broke up, the sister was involved with another guy, a real goon. but i still think about her all the time.