GRRTT:

Discovery of love 

Before we get married

Watched the both dramas. Thanks anyway.

Discovery of romance (chinese ver.)

About addicted ex you can check- 

Spring night

Love At Night 

Ex-Wife Stop

 GRRTT:

Discovery of romance (chinese ver.)

About addicted ex you can check- 

Spring night

Love At Night 

Ex-Wife Stop

Dropped one spring night, watched love at night. Will try the other 2 thanks.

 Nitz:

Something about 1% https://mydramalist.com/18774-something-about-1-percent

Something in Rain https://mydramalist.com/25173-pretty-noona-who-buys-me-food

Thanks but I watched both dramas. Please recommend more if you remember any.

What about Red Sleeve Cuff

Well Intended Love - ML manipulated her medical records to con FL into a whole heap of things. There is also a very nasty 2FL.

I looked this one up then clicked on the Obsessive Male tag and this list came up: https://mydramalist.com/search?adv=titles&th=2973&so=popular&or=desc

Also, Bed Friend (Thai BL, currently airing), one of the MLs has a nasty ex, plus a nasty family (had me yelling at the screen a few times).

 Veera94:

Hello guys,

I badly want to watch a drama where ML is obsessed and does anything to get his love. ML longing for FL not just sad or missing her but yearning for her.

A powerful man crying because he couldn't win his lady's love or misusing his power to keep her to himself or wants to destroy her and her lover(if she has any) because he couldn't get her.

It could be any situation like FL must be in love with someone else from the beginning or ML and FL are ex lovers meeting again while she moved on from him he still wants her back or ML misunderstands that FL is cheating him and shows all these emotions.

It can be anything I just want to watch a obsessed ML trying to keep his love. If there is age gap between leads either noona or oppa romance is also okay. But please don't recommend childhood lovers troupe or historical dramas

Any language drama is fine, movie recommendations are also okay just not long dramas with many episodes.

Please help me find some good watch.

I believe My Fated Boy has almost all of the criteria you're looking for (except that it's not toxic):

https://mydramalist.com/69073-love-me-like-a-child

Also Find Yourself:

https://mydramalist.com/30372-find-yourself

Maid's revenge - ml is obsessed with her and protecting her. He does his best to keep her by his side. But he really loves her with everything. Not in the least toxic way. The mini drama is quite intense.

Seconding Maid's Revenge - a mini-series, tons of longing and yearning from the ML here. It's technically got a childhood crush plotline but it's not super relevant to the overall story.  I honestly couldn't tell what era this was supposed to be set in, so it might (?) be historical, but again the worldbuilding is not at all relevant to the plot. I would argue however that it IS at least somewhat toxic since the ML touches the FL without her consent several times and there's also an instance of sexual assault from the SML.

Park Seo Joon in Fight for My Way does a lot of yearning - this is more lighthearted friends to lovers story

Seconding Before We Get Married - there's also The Smile Has Left Your Eyes and Cruel Romance and Why Her, all melodramas with absolutely obsessed MLs who will do anything to get and keep their FL

If you haven't already seen it, in Healer the ML practically drives himself crazy, he wants the FL so bad

I haven't seen Summer's Desire but have heard that both male leads are obsessive and possessive to the max, with tons of jealousy and longing.

In Cunning Single Lady, they were married and divorced, meet again as enemies but he eventually falls for her again and regrets the breakup, and he longs for her pretty hard

There's also My Secret Romance, where they have a one-night stand and she runs out on him. Once they meet again, he pursues her hard. Definitely matches the "misuses his power to get her" trope you mentioned.

I think most of the dramas I know of that closely match what you described are historical. I can recommend those if you're interested but since you said you don't watch historical I won't include them here.

Try “new tales of gisaeng” 

“Nothing gold can stay” 

They both have instances of ML longing for and obsessed with FL. Especially in new tales of gisaeng 

  • Summer's desire
  • Hana yori dango
  • Cheese in the trap
 Gatcha:

Try “new tales of gisaeng” 

“Nothing gold can stay” 

They both have instances of ML longing for and obsessed with FL. Especially in new tales of gisaeng 

I second new tales of gisaeng. Like he got increasingly obsessed and it has a very good climax moment where something just had to give