Secret Love Affair (2014)

Both lead actors did a great job to bring out the depth of their characters. Theme of a cheating couple is obvious and similar to this drama. But, it’s taken to another level and does not feel as trashy as the current drama. Cheaters are not glorified in Secret Love Affair.

Piano connected two lovers. Emotional, passionate, beautiful. Talented, genius, supporting, through music, they understand each other without spoken words

A bit similar plot about younger ML & older FL who attracted to each other but FL already married but FL & ML had an affair. If you like this kind of genre is a must watch drama. Yamapii is an eye candy for sure.

Both dramas are similar for their cheating aspect, both FL's are not satisfied with the relationship they have with their husband, thus, looking or accidentally looked at another man that appreciates their value more as a woman. They did not find the "other" man, they just happened to be in the right situation at the right time, and the "other" man caught their attention. The difference is that H has a sad ending, but OTWTTA has a happy ending, though not seen, just implied. And another thing, H is kinda steamy, but OTWTTA is more conservative, I don't know how they did it, but it came out nicely and sweet. H is also sweet and nice, but more sexy in my opinion.

First of all.Both dramas are CLASSIC MASTER PIECE in my opinion.
Both drama main leads are dealing with infidelity issues. But totally in different ways.

In secret love affair Female lead is much older than male lead.
My Mister male lead is much older than female lead.

In secret love affair Female lead is dealing with office politics.
My Mister male lead is is dealing with office politics.

Both dramas have many heartwarming and heart breaking moments.

Main similarity, YOO AH IN from secret love affair and LEE SUN GYUN from my mister has insane acting skills.Both are not talking much in both dramas but their expresions talking 1000 words.

young man falls for older women and Melodrama story between them...

I can't say this title is exactly the same subject of jdrama but it has vibes of age gaping subject and affair of younger boy and older women. And a little bit cheating ?