The arrangement works great, but lately the guilt has really become a burden for me. I really love my girlfriend and I just can't keep doing this but ...I can't stop either.When I am between his legs I forget everything. My sole focus is the relationship between his cock and my mouth. It's really a beautiful dick. It's about 7 inches I think. Big enough around to feel ample in my mouth but not uncomfortable at all. He is cut and the head is plump and purple tinged. I love the taste of his pre-cum.. “I can tell you want to fuck her,” she said.“How do you know that?” I asked.“Because your cock is still rock hard,” she said. “Now get out of the tub and let mommy take care of that.After I got out of the tub my mom dried me off, as she was doing that she started fondling my cock and balls. She then got on her knees and started kissing my swollen cock before inserting it into her mouth. As her tongue licked my enlarged member I closed my eyes and started thinking about Kathy. I wondered what. 'Of course. How very nice to meet you again. You are still as paintable as you were, what, fifteen years ago?'She grinned faintly. 'About that. You've aged, but like a lot of men, you look even better with silver hair and a more lived-in face. It's more than you deserve, for breaking my heart.'She had walked out on him, when it became clear that he had no plans to marry her. But before then, he recalled that the sex had been very good. She had been a kind-hearted woman, and he hoped she had. As she posed, I feel my cock getting harder and harder in my shorts. In fact, it was getting so hard that I had to make a few adjustments so that my dick had room to expand within the confines of my filthy, denim cut-off shorts. I was watching for a few minutes while she posed in different ways. Each time she changed her pose she would drop her dress and start raising it again when she started a new series of poses exposing her bare bum or pussy or she would lower the top when she bent over.