hi its my first time posting here, when i first came up with the idea to my girl about swinging she thought im going insane or i dnt love her anymore thats why i want to sleep with other women. as time went on she warmed up to the idea and so i got us some movies to watch and get in the mood. well she told that she will not be going to any swingers parties because she doesnt want dozens of men fucking her. so my shock came when she said we should start small and she wants another guy to join us. my heart sank because the idea was to fuck other women not the other way round. then again i didnt wont to sound like a jerk i told her i will arrange for a guy to come join. weeks later i found a a guy who i though my gf wouldnt want him anywere near her. much older guy we went to his place and chilled for drinks. we were getting buzzed and started talking about why we wanted this an all that. so the guy asked us to give him a show to lifen up the room. we started kissing and undressing and before we know it i was laying on my back and she was giving me one of the best blow jobs iv ever had. in the mean time the guy had undressed and naked on his knees behind my gf. well i saw his was just there stroking his cock and touching my gf. what i didnt notice was how hung this guy was. in a few seconds all i could feel was my gfs hand gripping my dick hard and her body was moving thats when i realizes that he was trying to enter her from behind. she reached back with her hand trying to push him back but he was holding her tightly on her hips. i asked whats wrong and thats when the real shock hit me. my gf couldnt take him in her pussy. his cock was huge with veins. by this time his dick had already juices from my gfs cunt but still having difficulty taking all of him. i asked him to stop cause my gf is in pain but just kept going and after a while all i che was all in and when he tried pulling out my gf stoped him and asked him to keep it there a while longer. now i was about to cry because i was thinking this guy will not even get to touch her and now here he is fucking my gf with big cock. my gf was now all the was up to my chest with her arms around my neck just hissing and moaning in my ear. he just just fucked her and fucked her so much that she was srceaming and clinching around my neck evertime she came. she just kept coming and coming while bull was fucking her like she owns her. he then flipped her around with one leg in the air and i got off my back watched this old man going in and out my gf with so much force. i went out hoping she'd see that im not enjoying the sight and a few minuts later i heard a loud noise coming from the room they were in and i went in to check whats going. they were still at it but had moved to the couch legs wide out to her side screaming her lungs out. her pussy was just oozing with her fluids and before i could even turn back...what the hell!! this guy had removed his condom and that was cum dripping from my gfs cunt, i knew right then that i might be losing my gf to a big cock freak that can fuck longer then i ever could. he was thrusiting long and deep not missing a beat the couch moving with every thrust he delivered i couldnt watch and went out side again. suddenly there was no noises and went in to see what up and there he was lying on top of my gf still buried that cock in her his cum dripping from her pussy. and all he did was turn back and give me this sly grin on his face and he knew i couldnt change my gf now. when he finally pulled out it was like a plug had just been removed from the basin as buckets of cum coming out. They laid there and i told her to get cleaned we must leave. the guy didnt even say goodbye as he just dozed of on the couch satisfied with a young girls pussy. Well we never tried that again but things were never the same again and we broke up a few weeks later. im sure she mustv gone back to him for more. till this day i will never do 3sums. Hope you enjoyed the story cause for some reason it turns me on everytime i think of that fateful day.