Note: This story was dynamically reformatted for online reading convenience. Julie couldn't be a better wife for me, but I would love it if she would try another threesome, and explore fun like that again once in a while. That's not asking so much! I believe that the main attraction of a threesome for me is seeing her get off on it so much. The repeated sex we had with our "other man" the first time we had a threesome arrangement was sure good for Julie. She and I were engaged to be married but she had no qualms about getting that other guy's dick in her mouth and pussy as much as possible: dashing up to his room in the middle of the night when I left the house for work, walking into his house and bedroom when his wife was supposed to be out of town, rising up off my lap and going to her knees in front of him whenever he visited me at my place. One time we were all three in my room and I said "why don't you go upstairs and take a shower together?" He and Julie said "OK, lets go!" and scrambled up the steps. I watched them climb the stairs arm in arm, then stayed in my room trying not to rub my cock too much, thinking Julie would come down to me and be well stimulated once she finished her shower with Dave. I heard the water going; they were in there naked and washing each other. That was an exciting image. After a while the water stopped and I waited, but they didn't come back down. I went upstairs to see what happened. Nobody in the bathroom, I opened the door to Dave's room and there they were, Julie stark naked on her back with her knees in the air, Dave between her legs, moving his cock with the big head in and out of her. Julie looked over at me when I looked through the door; she had a nervous smile on her face but she kept her arms around Dave's rib cage and her knees were wide open. Dave turned to tell me "Get out of here." He said it again so I left, told her I was going to the cafe around the corner. Boy was I mad. I wanted some sex from Julie too. They were supposed to come back down after the shower and we would have a threesome; that's what I wanted. Fuming there at a table, after a good long while Julie came in with that worried look on her face. When she saw how angry I was she started with the tears and apologizing. I told her it was my fault, that I hadn't made my expectations clear, and we got over it. Anyway, that illustrates how much Julie liked fucking and sucking with Dave. It was really something, a great turn-on, seeing her so excited having his cock in her mouth; the way she rolled her head around as she was smearing her tongue all over his peckerhead. She eagerly sucked his cock whenever the opportunity presented itself. I loved seeing the skin on her face take on a glow, the way her brown eyes got so big, when she got her lips around his shaft, that big pecker head of his inside her mouth. She'd stuff it in one side as far as she could, then shift her head so his dick would push out her other cheek. A little perspiration on her forehead would make a few strands of hair stick to it; that was very sexy; I knew she was hot. It was so fluid, the way they communicated somehow and Julie knew what Dave wanted next: she'd pull her ruby lips off his cock, get up off her knees, back over to my bed, and in one motion pull her pants and underwear off; then she'd lay down with her legs spread wide, an unspoken invitation to fuck. Dave followed her to the bed in two steps, his pants undone, and he would climb between her open legs. Her pussy was always so wet from sucking his dick that he didn't have to fiddle with foreplay, he just put his cock in her. I saw Julie most of the time reach down there and guide it in for him. There was my fiance: laying with bare heels on my bed, knees up in the air, the guy from upstairs pushing his stiff dick in and out of her while I watched. It was strangely erotic to see the girl I was going to marry with her arms around some other guy while he fucked her; I still remember the way she would look over at me with a blissful smile on her lips, big brown eyes open wide and, in their own way smiling too. Dave would get close to cumming in a few minutes. He'd swing his legs off the bed, Julie's knee on that side rolled down flat on the mattress. Holding his pants up, Dave would step towards the head of the bed and Julie would look up at him as she wrapped her moist and tender young lips around his shaft. Muffled cry from Julie, a groan from Dave, and he'd release his spray of cum into her mouth. God I love that image: her limpid brown eyes so big and her neck muscles taut as she holds up her head and accepts his thick earthy fluid, raw semen. Then she'd close her long lashes down onto her cheeks and slide her wet lips up and down his shaft, withdrawing every last drop of Dave's cum. Holy fuck it was great watching my girl and the other guy going at it like that, the most erotic sexual event of my life. What could I do to convince her to let me have more of that? I'd love to hear your ideas.