[Mf] how a simple trio to the sex shop turned me into a cuck

So I dont know where to begin. Basically I’ve been dating my gf since a few weeks after high school ended, I’m 28 shes 27. We recently got engaged and have been talking alot about the wedding and all of that crap, which lead to us talking about making sure our sexlife doesn’t slow down or get boring, ultimately leading to us divorcing like most of the marriages in our town. So we began discussing exploring our kinks and desires. We started slow with sex in a car in a parking lot, and worked up to sex in front of strangers. We discussed swapping and threesomes, which lead us to the sex shop.

We decided to go to a sex shop at the next town over since it was our first time inside one. We explored the enter shop and found out they had these rooms and a glory hole room. We ended up getting a dildo and some accessories. We went home and began playing and roleplaying a threesome when I suggested we check out the glory hole, maybe we could just fuck and she could just jerk them off thru the hole as we fucked. So we researched it and ended up making a email and posted online looking for a guy under 30 for gloryhole fun(handjob as we fuck).

[MF] foursome with gf went way wrong.

So my gf(26) and (M28)e were invited to a friend of ours party. There was a few people we knew and some we didn’t. We spent some time socializing before we start to heavily drink. No my gf(jessica) is a bit on the shy conservative side, so we just kinda followed me around drinking. So it was pretty late and most people left but a handful were still there. Everyone being drunk and tired we decided to go out back to smoke and we ended up playing have I ever? During the game my gf was asked but one of the guys if shes ever hooked up while being watched and she said no. Nothing more of it till the end of the night. My good friend Jake and his gf brittany were sitting with us when they asked if we’ve ever explored our sex life and asked us to join them in the guest room and have sex in the same room with our own partners. After quite a bit of convincing we agreed. They began making out and grinding eachother so me and my gf followed along. Eventually my gf is sucking me as I’m on my back and they were doing similar. We got asked to join them on the bed and we began to fuck. Now my gf is bi so she and brittany began feeling eachother up and led to them making out and teasing us men. Jake suggested we switch girls for just blow jobs I denied it and my gf agreed. But when they asked again we agreed. So as I sat their starting to get my dick rubbed and lick I looked over and saw my gf kissing up and down Jake’s dick. I was so in shock I lost my boner. Brittany suggested I follow her into the other room and we all agreed to just go with the flow. Me and brittany are feeling each other up and I began eating her out and eventually brittany takes control and sucks me wild for a few mins then climbs on top and rode me to cum within mins. We lay there chatting for a bit and I decide to get dressed and check on Jessica. When I walked into the room my heart dropped and my stomach turned as I was so shocked at what I saw. I was witnessing my gf on her back getting fucked rough by Jake but that wasnt was as shocking as seeing her sucking off another guy at the same time. I stood there shocked and watched Jake groan and unload deep in her.. I was not expecting this to happen and can’t get it off my mind..