Looking for stories where the boyfriend/husband cheats on their SO with a less attractive/desirable woman.

[BFK25]

It can either be a bit more sweet like the wrong sister

https://www.literotica.com/s/the-wrong-sister-3

Or more debaucherous like my girlfriend's slutty roommate
https://www.literotica.com/s/my-girlfriends-slutty-roommate

The guy being a bit reluctant and/or guilty is a fun story theme too. Thanks.