Cheating is lame and awful and just all around crappy. But still, people do it—lots and lots of people, actually. If prostitution is the world's oldest profession, then cheating must be the world's oldest betrayal.
At least in the age of computers and smartphones and dick pics, it's so much easier for a straying significant other to get busted. If you do get cheated on by a lousy partner, you're not alone. As evidenced by these stories from Redditors, there's a lot of creeping going on. And as shameful as it is to admit it, when it's happening to other people, stories about cheaters can be pretty interesting.