I was living with my ex boyfriend with whom I dated for a couple years prior. He took me in even though we were broken up because my family was shit, and I was in a really bad place in my life. Basically while I was living there I was constantly reminded of how he had cheated on me in the past. He had the audacity to bring a girl over while I was working (I know we weren't together but he could have gone to her house) and let me find out about it. I was so fed up, in such a bad place, and miserable and trapped that I ended up casually and consistently sleeping with a guy I met at a bonfire on my birthday a month before I moved in to my ex's home. I would constantly say I was going shopping, or getting food, and drive 15 minutes to go fuck this guy. It was the sweetest revenge except I had to keep toppling lies and lies. I ended up moving out, I never got caught throughout this whole ordeal. We ended up dating again after I got my life in order and was moved into my own apartment and started university. I ended up finding out that the entire year we ended up officially dating again, he was fucking around on me the entire time. I left, never looked back. Honestly the lying and alibis are so hard to keep up with. Even though I never officially cheated, it was a lot of maintenance to uphold a story of where you were at and why.