This story happened about 4 years ago when I was in my late 30's and it is 100% true. I hope you enjoy it!
Growing up as a "straight" cis male I never imagined that I would one day have another male cum in my mouth but a lot of unexpected things happen during the course of life. I had always been drawn romantically to females as I grew up and although I never had a desire to be with another male I always appreciated a good looking guy when I saw one.
Another thing I always noticed and appreciated was a good looking cock. Whether it was flipping through the pages of smut mags as a teen, watching porn on VHS back in the day, or eventually seeing everything that internet porn had to offer. There were times when I heard male friends talking about porn and complaining about there being too much focus on the guy or his cock but I never felt that way. I was just as intrigued and fascinated by a gorgeous looking cock as I was by an amazing pair of tits or a delicious looking pussy. It made me question myself at times wondering if I might be gay but I only ever had crushes on girls so it was somewhat confusing.
Fast forward to adult life and I had still never actually considered doing anything sexually with another man. It wasn't something that I even really thought about. I ended up meeting an amazing woman in my mid-30's and fairly early in our relationship we started to explore the lifestyle because she confessed to me that she had always wanted to experience being with another woman. I was determined to help her live out that fantasy and we eventually made it happen. It was an amazing experience for both of us and I think seeing her fulfill her bisexual fantasy planted a seed in my head that anything was possible.
A couple of years went by and by that point we had several experiences playing together with other people. We had a threesome with a single female and we also connected with a few different couples for soft swap as well. We started going to the occasional lifestyle event and one night something happened that changed me forever. My wife and I were in a playroom at a party just enjoying each other and there was another couple on the same bed doing the same. We had never met them or seen them before. While I was between my wife's legs eating her pussy, the woman from the couple next to us reached over and started to feel my wife's big tits as her man was going down on her. He looked up from her pussy to ask if it was ok that she was touching and my wife said "yes." Soon both of them were touching and feeling all over my wife's body.
My wife told me to lay down on my back and she started sucking my cock. After a few minutes, the other woman crawled over to join my wife and they began sucking me together. I was in heaven. Eventually my wife made her way over to the other guy and started giving him head while his girl kept working on me. I always loved watching my wife suck other guys but from the position that I was in I could only see her head bobbing up and down from behind. I couldn't actually see him in her mouth. I was enjoying the blowjob that I was getting from a woman who's name I didn't even know but I kept looking over to see my wife in action. It was then that I noticed they had shifted position and I could now see my wife's lips wrapped around the thickest cock I had ever seen.