We've been married for nearly 20 years. I'm 43, she's 41. Life is good between us. Sex life is OK. Every fortnight she goes out for a meal with two of her old school friends. Three women in their forties, all happily married, catching up on gossip and putting the world to rights. I've noticed, however, the last two or there of these nights out, that the clothes have been getting a bit tighter, the skirts ar touch shorter, and the make-up a tad more prominent, if that's the word. There's no doubt that all three ladies go out together, because they meet at each other's houses by rotation before setting off, and all there come to our house, also obviously ready to go out. The time she comes back home, however, have been getting a little later each time. Previously, it was no later than ten o'clock. The latest occasion it was just turned midnight. New, lacy black underwear, the bra just showing over the deep neckline of her top, new black six inch heels. I lay awake as she came into the bedroom, making out I was asleep, but stirring as if I'd just woken when she got into bed. "You smell nice", I murmured, nuzzling her neck. She tensed slightly, but then giggled awkwardly. My hand reached between her legs. I felt her thighs tense at first, but she didn't resist as I tweaked her mound and then slowly but firmly pushed two fingers inside her. It was very wet, and very sticky in there, and as I pulled my fingers out they felt as though they were coated in a sort of gel. I looked at my hand, then into her eyes. "Someone else been there already tonight?" I asked. She smiled nervously and bit her lip. "Cum, isn't it?" I asked. She nodded and closed her eyes. Then, in a flash she opened them wide and stared firmly back at me. "Yes," she said, "it's cum, and lots of it - and to answer all your questions, he's black, his cock is very thick, fills me fucking fantastically and holds back his cum so that we make it together." Before I could reply, she went on... "I've known him for two months. He bought me a drink while I was waiting for a cab the night that Sophie took Jane home because she wasn't feeling well. He gave me a lift, fucked me in his car that night, and has met me afterwards every time since. The last time he picked me up outside our house after the others had dropped me off. We've fucked in a park, in a bus stop and at his apartment." "In case you wondered," she went on, "I don't love him, but I love being fucked by him and I don't intend to stop. Now, if you want to fuck me too, get on with it, but get used to seconds because that's how it's going to be." By the time she'd finished I had a raging erection, and I couldn't wait. I almost leaped across her, pushed her legs apart and rammed my cock inside her. She looked up at me and almost laughed. "Come on ride me," she said, "ride me hard. You're nowhere near as big as he is, but I want to feel you pushing into me. Don't wait for me to cum, I probably can't after fucking with him, but I want to feel you pumping your spunk into me, filling me up on top of his, so it's pouring out of me." I needed no second invitation, my thrusts got faster and stronger. Despite her boasts about sex with the other guy, she opened her mouth with an uncontrolled gasp as I fucked her rapidly and firmly. Admittedly, it wasn't long before I felt the orgasm building inside me, but neither of us objected as I started to pump her full of my jiz, topping up the other guy's spunk inside her. As I climbed off her she took a deep breath and rolled over to face me. "Well," she said after a minute's consideration. "That surprised me. I did cum - just before you did, but you didn't notice because you were in the zone." She paused, then went on... "You should know that I'm not going to stop fucking him, and I don't want you knowing who he is, finding out about him, trying to meet him or anything like that. I need what he gives me, I love sucking his cock, I love his cock pounding me, but I love you too, and I want your sex as well. Yes, I'm greedy, but that's how it is. Get used to it." She went to the bathroom, came back to bed and went to sleep. We didn't discuss it further, but she's going out again - for the first time since that night - tomorrow evening. What happens when comes home will be very interesting, to say the least. I am looking forward to it.