Responses
It's probably this one it also has live action drama -
https://www.mangago.me/read-manga/me_my_husband_my_husband_s_boyfriend/
Thanks
Looking for this manga.. a love triangle.
The story is about a married couple and the husband is secretly gay. He cheated with a man younger than him. Turn out the young man was his wife former student (she is a teacher) .
The young man have a crush on the wife from a long time and is the reason he approach the husband.
The latest chapter is about they trying a polygamy relationship