I slowly laid her down and came on top of her and smooched her wildly. Our smooch must have lasted for about five min; all this while I was totally on...top of her. My dick was totally hard and she must have felt it also. While smooching her, I was playing with her breasts and caressing it really hard. Slowly I put my hands inside her top and unstrapped her bra. She gave me naughty looks; I put her hands up and opened her top along with her bra. She did not resist and now my girl was topless in. And although my sister and I remained as lovers, I could feel the difference in our couplings. The old frantic need for closeness; the intense demand for acceptance that had once dominated my sister's surrender of her body to my every whim was no longer operational. What sex did occur between us was soon almost casual - incest became almost an incidental part of our sibling relationship.And in a funny way, I was glad.I couldn't help but look on my sister's movement toward intimacy with someone. Trying to push me away from her pussy but I just wouldn't let her go. She then says " See what you made me do! You eat pussy better than most women." I asked,"... are you lesbian?" She answered "No, I just prefer being with women when I get horny like this."I stood up over her as she's sits up on the couch. She explains to me that she has a man who lives out of town, and that she see's him once in a while and prefers have a long-distance relationships. Wow, she's told me that as she was. Mom gets on her knees and takes his shaft into her mouth. She bobs her head on his big dick. His dick hardens. He grunts. She gets up aligns her pussy with his big penis. She sits on his dick and gives me a warm smile. She bounces and moans. The magestic sight washes me with happiness. My mom enjoys herself. She smiles very sweetly to me between her soft moans. Mom continues bouncing. I tell Maria and she seems disgusted. To my utter surprise, the dorbell rings and she comes in. She sits near.