It was a mess. The whole thing was a mess. I had seen her stomp all over the boundaries we had set and I had meekly accepted it, My girlfriend had sent three of my best friends a full nude and explicitly made sure they came to her, and I didn't have the courage to say anything about it. I reasoned with myself at the time, I had already spoken to her about what she was doing and it hadn't stopped her, so why try again? I wasn't willing to lose her so I didn't think I could stand up to her. Besides, even though I wasn't happy with it it's not like she could go any further. Everyone had seen everything.
Even though I was accepting it, I tried to keep my guard up. I was spending more time at Kat's place rather than bringing her around to mine. Having her at our place meant 4 people I couldn't trust and me fending for myself. At least being at hers I only had to worry if her phone was out.
With that said, I couldn't keep her away from my friends altogether. She didn't know that I'd looked at her phone and I couldn't let her know I didn't trust her. Unfortunately, this left me with some uncertainty. At least when everything (almost everything I guess, since she was sometimes doing it while in the room with them) was over text, there was a record of it. The first time it happened in person, I'll never know what exactly happened.
It was only a couple of days after she'd had them all jerk off and we'd had our lovely meal at a restaurant that Kat next came over to see me. Despite everything it was a pretty normal visit. We had sex, we watched a sitcom in my room and we had a really great time. I was convincing myself everything was fine despite what she'd been up to and when she said she needed to go to the bathroom I didn't think anything of it. It was only when she took longer than I expected that I started to worry, but even then it wasn't a serious thing, more just hoping she was ok.
I did get up to go and check on her. heading for the bathroom me and my three housemates shared. I was expecting to hear nothing and thinking the most embarrassing thing that could happen would be hearing the unfortunate noise of her using the toilet, so my heart sank the second I heard muffled voices behind the bathroom door.
I couldn't make out what they were seeing or even who the other voice was, but it was obviously a woman and a man. They were quickly going back and forth and each voice was having a little laugh at the end of most of what they said. Why would she let one of my mates into the bathroom with her? I know she'd crossed boundaries with them but this was something else. I thought maybe she was just having a bit of fun because even after her actions I was sure she wouldn't cheat on me.
My faith broke as I started to hear her moaning. Heavy male breathing pretty swiftly follows. I guess things would have been different if I'd done what any other man would do and banged on the door, but I didn't. I retreated back to my room and laid down on my bed. She came back about 15 minutes later.
"Shall we watch the next episode babe or do you want to get something to eat?"
---------------------------------------------------------------------------------------------------------------------------
I still didn't really know what to do. This had gotten way out of hand and there was the possibility my girlfriend had seriously cheated on me with one of my best friends. It felt like confronting her would have ended the relationship whether she really had done or not, and I still didn't want that. I tried to convince myself it was good that I had a girlfriend that my friends wanted, since it meant she was so hot that everyone wanted her, but clearly that was just me trying to cope. I didn't want anyone to want her, I wanted her to be loyal. I realised I had to either end things or I had to find a way to convince myself I was ok with what was going on. I took the coward's route.
It took me a couple more days to work up the nerve to do anything. I knew I couldn't speak to Kat about it since the first conversation we had was filled with her apologies and her feeling bad and it changed nothing, so I decided to speak to Pete. He had been involved in the escalation of things with Kat, and had sent pictures of his cock and his cum to her, but as he'd been the only person who had ever seemingly felt bad about what was happening I thought it was the best way to find out what had been going on.
I steeled myself, went and knocked on his door and told him straight up I wanted to see the group chat that he, Chris and Josh had with Kat to see if anything had happened since he had first shown me. For a second he looked like a cat in the headlights - as far as he knew, if he showed me this would be the first time he admitted he had properly participated in this sordid mess. After a second though he just looked defeated. He picked up his phone, opened the app, scrolled up to where he'd last shown me and handed it to me.