I'm watching Love Scout and I am craving more romance dramas with characters over 35. That and a happy ending are my only requirements. Any country or sexuality is fine.

One Spring Night
Cunning Single Lady
Romance is a bonus book (ml is in this under 35 but its still fitting)
The Time we were not in Love
Search: WWW
A gentleman's Dignity
Madame Antoine


Ahhh I actually am also always searching for people with such an age group in dramas. There used to be a lot more, but currently it feels like most dramas are with people in their early 20teis. Which....ngl....its quite annoying at times 

Chocolate 

What Did You Eat Yesterday?

 Ivy:

I'm watching Love Scout and I am craving more romance dramas with characters over 35. That and a happy ending are my only requirements. Any country or sexuality is fine. 

Meets all criteria, except the FL actress was between 30 and 35 at the time of filming:

Koi wo Suru nara Nidome ga Joto  BL the actors are younger than 35 but look middle age and act very mature. Worth your while.

Old Fashion Cupcake they're 29 and 39 and the older one is going through midlife crisis. BL

Because of Love single mother

First Love: Hatsukoi this one is a gem. It jumps to the past a lot (younger actors).  Minor spoiler: She has a teenage son and he's in a career slump. 

Roy Leh Marnya Divorce

Go Back Couple mid life crisis, career slump

Familiar Wife idem

18 Again Idem, teenage kids

Nice Witch Just shenanigans and cute/funny antics

The Beauty Inside idem pretty much

Crash Course in Romance this one is especially cute and thugs at your heartstrings. Teenage kid.

Fighting Youth older women, office workers, female centric

Search: WWW Idem

The recently aired kdrama 'Love Your Enemy' had leads who were in their late thirties, I think.