Please help me!!! Drama where male lead is loyal to his wife but when she cheats, he also cheats.

Basically, I would prefer if he cheated with some woman close to his wife, either with her friend, or her sister.

Also, husband need to be so loyal to his wife before her affair cause he loved her so much but she chose to betray him.

Won't mind if its even 18+. Will be more happy then.

I watched this movie "Loveholic" and I have been wanting to watch whole drama like this one for a long time.

Here, maybe his wife's friend already fell in love with him, and their kisses, their sex felt real on an emotional level to me. Liked the ending too where he chose to get divorced. I could see why he found himself attracted to her.

Maybe I want the opposite version of ongoing drama "World of married" LOL.

Please, I know I make such unique requests, but if you know any dramas like this one, please recommend me some!

 Sakura098:

Well I don't know any that fit right the way to your preferences but love affairs in the afternoon is really good. It is a Japanese drama but they made a Korean version of it. I watched the Korean. 

Do the husband of the wife who cheats, cheats too? Or he is just a punching bag for his wife to come to him when she has created enough mess in her life to clean it up all by herself?