I did not totally stop masturbating once I was married. I just did less and only when I was alone (which did not always happen). When my daughters were younger (around 6 and 7) my wife started working morning shifts and would leave for work by 5:00am - so I would get the girls up and ready for school, off to the bus stop and then I would go to work. One morning, when I was getting out of the shower, I found that my daughters had opened the bathroom door and were peeking in at me. That was the first time they ever saw a penis and they wanted to know what it was. I told them it was my penis and all guys have them and not to tell their mom they saw mine because she did not want them to see a penis till they were older. They agreed but after that, they would try to peek at me changing if I did not lock the doors (which I often did not remember to do). Another morning, they came into the bathroom when I was in the shower and asked me why sometimes it was small and other times it was bigger. They had never seen me erect but temperatures definitely could make my penis vary from around 1 inch long and pretty thin, to 3 inches long and thicker. When erect it was usually about 6 to 6 1/2 inches and much thicker. I told them that it changes size depending on how cold it was. They asked if they could touch it. At first I said no, and they got upset and angry, so I finally let them. As they touched and held it, I started to get erect and they were shocked and asked what was going on. They had never seen it get so big. I explained that sometimes on it's own, it gets very big and hard and then goes back to normal later, but if it gets touched it can get big and hard as well. They really liked that and my oldest daughter liked to make a game if trying to make it as big and hard as she could while playing with it. She would often say, I am going to make it so big it touches the roof. My younger one did not like to play with my penis as much as her sister. She liked to play with my balls, which her sister rarely ever did, holding them, rolling them and feeling the each ball separately. As soon as she got a chance to play with me, she would say, "I like the balls" before playing with my balls. She also started another thing completely on her own. She would get naked or at least make sure that her vagina was bare and exposed and if I was not erect, she would play with my penis till she got me big and hard and then rub and grind her vagina up and down on the shaft of my hard penis. If i was sitting, she would climb on my lap, if I was lying down, she would climb on top. If I was standing, she would lie down on her back and spread her legs wide and ask me to climb in top and rub my penis on her private spot. They would also catch me playing with myself, and would join in either playing with my penis, or uncovering their pussy and rubbing and fingering themselves while I jerked off. We often had showers together in the morning, usually all three of us but sometimes only 2 of us. We touched each other and washed each other in the shower and this was the only spot I ever really touched them, feeling their budding breasts and their asses and vagina's. When we played in their bedrooms, i rarely ever touched them, it was always them touching me. I knew doing all this with them was not good, but they begged and begged me and I am weak willed. I had never had many girls interested in me, so having these two beautiful girls wanting me so much, I could not say no. I never actually tried to have sex with them, and never instigated any of these. I also never came when I was with them. It took a lot not to blow my load, and often had to tell them, no more, I am tired. I just let them come and ask me and we did this till they were around 10 and 11. When they were around 8 - 9 we had the talk about sex with them and so they knew fully about sex but still wanted to play. They just understood that I never went all the way with them. They lost interest around that time and we rarely had showers together anymore. I did catch them having showers together sometimes and they would play with each other's vaginas, fingering each other and sucking each other's nipples. I would watch and jerk off while watching them. They would often still go naked in front of me as long as my wife was not around and I got to see their breasts growing and pubic hair coming in, then they started to learn to shave their pussy's and they would let me watch that. I even got to shave them a few times before we stopped. Then they totally stopped going naked in front of me. I barely saw them in their underwear and we no longer did anything sexual together. It was sad but good. They are in their 20's now and said they never regretted doing things with me when they were younger. They felt they learned about sex, themselves and really learned about handling a penis and enjoying a penis without being with someone they feared would hurt them or force them into anything. They still thank me for letting them play with me to this very day. They have both had boyfriends and used their knowledge and experience to have very enjoyable safe sex with them. (Sometimes I am jealous). I think about them often during masturbation or even when having sex with my wife.