RE: Percentage of men and women who admit to infidelity with a brother-in-law or sister-in-law: 17 % posted as A FANTASY.
You must have read the post: “I broke up with my boyfriend and I can’t tell him the truth of why. I was baby sitting at my sister’s home (I’ll call her Jen and her husband Jeff).” A FIRST EXPERIENCE
Seems like a prime example of sex with her brother-in-law. A good deal for him. Maybe not so much for the gal who posted the confession. In the short term it should be OK for her, but maybe not long term.