We had an open sexual relationship for the last eight years She didn't want that to stop and I agreed to that. Sarah had the opportunity to have sex with a few of my BBC's black friends and even had a few gang bangs with them. The bottom line was she loved BBC and was fairly addicted to it. It seemed like I could never say no to her. During the month we had been trying to get my partner Sarah ( not her real name ) pregnant she did however abstain from sex with anyone else. I wanted to concentrate on the task in hand. Even Sarah will admit though that having constant sex makes her really horny and she just want more. This is very apparent when she is ovulating. Of course this is the time when she usually avoids sex which can be a real challenge for her. It was February and her target ovulation day was Wednesday with possible success on Tuesday or Thursday. We had fucked been fucking like rabbits those three days. I lost count of the number of times I had cum in her. The week before we went in for some tests with a fertility doctor. Just to make sure there wasn't an issue with one of us that would prevent conception. The test results had not come back yet. I needed a break. So I asked a couple of my friends to come over and give me a break over the weekend. Sarah knew I had couple of friends ready for her, she said she would meet them on one condition. They had to wear condoms. She had never asked anyone before to do this, I know she had always let her lovers shot their load in her. She said it was because even though she was probably out of her fertile time she just wanted to take extra precautions. My two friends were a little disappointed but said 'okay', but we didn't know they intended to cum inside her. The first guy Dan did put on a condom. The condom looked so taught, he proceeded to oil the condom up before kneeling between her out stretched legs on the sofa and he slid in her, my other friend Mac was stroking his cock and he moved forward kneeling on the sofa and spread his arms out to support his self and fed his cock towards her face where she took him in her mouth. My friend Dan between her legs was now fucking her hard and she was having a job to keep Mac's cock in her mouth. Then Dan said "I'm gona cum all inside your dirty pussy you fucking slut!!! You better beg me to cum you sexy bitch!" Sarah opens her eyes as Dan continues to talk dirty to her. " Cum in my sloppy hairy pussy, I want it so bad!!" this time yelling loudly into Dan's ears to make him cum. " Treat me like the whore I am and cum inside my dirty hole!" This sent Dan over the top he held himself deep between her legs shuddered and I could tell was unloading in hard convulsions in the condom, as I watched his cock sliding out, all I could see was the condom in tatters with just the ring about half way up his shaft, Mac was already rolling a rubber on his cock, And Dan said, words like " that's a waste of time now Mac she taken all mine as he slid the tattered condom of his cock, ". Without hesitation he slid it off and dropped it on the floor and moved between her still outstretched legs and went straight up her, she was completely out of it and never protested as he began to fuck her with his bare cock, he unloaded a lot quicker than Dan, and climbed off. I found out afterwards that Dan had oiled the condom up with baby oil and that's why the condom was in tatters as baby oil is one of the substances that can break down the rubber. Causing the condom to break during sex.