I know of a single mother story from my old neighborhood: My buddy gets divorced from his wife but the divorce is completely amicable so they both decide to live in the same house until their last kid goes off to college. One day, out of the blue, while he's working from home, my buddy gets a visit from the cops. They're there to find out why a car that is registered under his name had just been seen leaving the scene of an attempted murder scene.
What basically happened was that the single mother of 3 (the ex wife) had turned into a sex maniac and was having sex (meanwhile, she lived a sexless marriage when married to my buddy) and dating anyone with a pulse. One day, she decides to meet guy #1 at a restaurant. At the same time, guy #2 finds out he's got an incurable STD from her and goes on a hunting expedition. Eventually he finds the restaurant and gives guy #1 the beating of his life, stabbing him multiple times with a fork (he almost bled to death). Ex wife, who's still driving her ex's car, decides to elope the scene, gets in the car and leaves, but the restaurant parking lot has a CCTV camera so she got busted.
When the dust settled, my buddy found out his ex was literally dating 5 different dudes, 3 of them in different states. And having sex with all of them, sometimes with two or three men in one day.
Moral of the story: be careful what you put your dick into.