I found out my girlfriend was cheating on me at a party held at her boss' house. It wasn't my first time meeting her coworkers as they hold get-togethers like this quite often. Usually, it's a BBQ at a park, or a meet up at a local bar. A lot of times we will meet at the location of the get-together for whatever reason, but this night we were both off and drove together.
Her boss has a large house on a huge plot of land. There was an outdoor dance floor with a bar of its own, a game room with a pool table a ping pong table and Foosball, and a large lounge area with a bar. It was a fun night with a lot of drinking and dancing. I loved dancing with her and she loved teasing me while we danced. We were dancing a lot and both needed a break so we headed to the lounge room with a few other coworkers and sat talking for a while. We were talking about our favorite movies when a few of her coworkers decided they wanted to get up and dance. My girlfriend said she wanted to dance but I was feeling a bit woozy and told her I'd catch up. She said ok and went off with her friends. and I sat and talked for a bit more before deciding to get up and find her on the dance floor.
When I got outside there was a high energy hip hop song playing and I saw the dance floor was pretty full. I couldn't find my girlfriend right away.l, and after looking through the crowd a bit I was about to give up and check inside when I spotted her. She was dancing with a male coworker of hers. I'd met him before but couldn't remember his name. He was a bit taller than me and in a bit better shape. She was facing him dancing close and it looked like she was grinding on his leg but it was hard to tell. I moved over to the outdoor bar and leaned against it as I watched her dance. She was clearly having fun and I didn't want to interrupt. The crowd moved and they moved with it, she turned around and shook her ass at him in time with the music. He moved closer putting his hands on her hips and pulled her back against him. I saw her eye go wide then she looked back at him and kept shaking her ass. The song ended and few people left the dance floor. I took that as my cue to cut in. As I got closer she was facing him again and he was leaning down whispering something in her ear. I tapped her on the shoulder and as cheesily as I could I asked if I could cut in. She smiled at me. Introduced me to her coworker again and started dancing with me. Her coworker left us and I watched him move over to the bar.
We both danced for a while then drank with a group of her friends. It was getting late and we both drank too much. Her boss recommended we stay the night. Initially, I declined, saying I was sober enough to drive us home, but her boss insisted. Not wanting to make a bad impression I agreed and we stayed. There were a few others who were staying as well and he had plenty of room.
As the party started to wind down her boss showed us to the guest room where we would be staying and excused himself to show the others where they would be sleeping. The second we were alone we started making out. Things were getting hot when she got up and said she had to pee. She went to the restroom, but before she came back I must have passed out because I woke up a bit later and she was asleep next to me. I rolled over to put my arm around her and fell back to sleep. I woke up again a few hours later and she was gone. I figured she had to pee again, and I got up to do the same but when I came out into the hallway I could hear what sounded like moaning coming from the living room. Luckily I hadn't closed the door behind me yet so I hadn't made any noise. I quietly crept down the hallway to the source of the moans it was dark in the house but the moon was bright and casting enough light to see clearly. I made it to the living room without making a sound and that's when I saw it.
