It all started back in high school. Shinwoo is caught in a compromising position by his crush, Taeso...
Humiliation.
ML has a boyfriend who struggles keeping up with his huge humiliation kink. ML suddenly meets his hs crush who just became even more of a wet dream after hs.
So yeah, ML continously cheats on his bf, whichthe author uses as a tool for more humiliation. I really like this work but a lot of people complain about the cheating in the comments, so it's not for everyone.