I wish my comment was to the extreme of the others, as it's bland in the respect that what I did constitutes as cheating, but still bland and not physical. Unlike others, OP, my fling happened because of revenge. We were at a point in the relationship that we said "I love you" to one another. we had been long term, and started sharing ideas on the future. Occasional arguments sprung about how our interests might lead us down different paths, but that was once a month and i was still incredibly happy. Our relationship became physical, and honestly, sex kind of made things better, because we no longer had to alternatively handle lust. She was admittedly lustful of me, but soon accusations of cheating were raised from a good friend of mine who had valid evidence. The accusations of cheating were simply that she and another guy had been making plans for dates with each other, and discussing cuddling. The guy was clearly interested in seeding land that i was cropping at the time. I brought it up in a huge fit because until that point, our relationship had no issues except that of the most arbitrary things. She and he had a convincing story that made it seem like a misunderstanding, so i said nothing more but an apology. Every time i browsed reddit, showered, or layed awake at night i realized that nothing added up. Furious and knowing she'd lie and make up some story to make it my fault (because of a past problem that happened before we coupled) i went to an ex whom i'd left for this girl. This ex was a great friend to me and understood the feelings i had for this girl. After a few days of chatting with hearts we started sexting and worse whilst simultaneously i learned more about my girlfriend's status, and my earlier mentioned friend told me info, withheld from fear of losing a friendship, that lead to a confession. i told her it was time to take a break. after a few weeks i stopped sexting ex and we went back to great friends, No hearts in chats, no kisses or nudes. I knew i wanted back with current girl, loved her too damn much. so we got back together and i told her i just talked to the ex during the break apart from each other. My "cheating" stood purely as a mental way for me to feel even after being cheated out of a relationship that i was told never had an issue, meaning she might've lied about our relationship's quality. I knew this ex was better as a friend and we both knew sexting wasn't going anywhere else. Current girl and I are no longer together because i slowly lost all feelings for her.