A kdrama about meeting an old love? (not childhood)

Hi,

Could you recommend me a drama where the leads used to be in love or date and meet again after some time with lingering feelings?

Like The Third Charm for example.

Thanks! :-*

Cunning Single Lady - the pair used to be married.
the summary of it is horrible, please ignore it. It is a wonderful drama that is so worth to be given a try ;)

Ex-Girlfriend Club -  funny and cute

I need Romance 2 - friends to lovers, however they too had a past as a couple 

• My Father is strange (Korea) - leads were college sweethearts that broke up
• Discovery Of romance (Korea) - leads are exes
• My single Wife (Korea) - leads are supposed to be divorced couple
• My sunshine (China) - college sweethearts
• Fantastic (Korea) - leads are exes 
• Wild chives ans soy bean soup (Korea) - leads separated due to tragic event
• Cinderella's sister (Korea) - were never together but they had that connectiin that even with their separation they are still drawn toward each other
• The way we were (Taiwan) - leads were in love but somehow weren't able to confess with each other and ended up being separated and being each other one great love and regret 
• Will it snow in Christmas (Korea) - leads were never together during high-school but FL did court ML for revenge, and ML ends up falling for her but separated because of a heartbreaking event
• Here to heart (China) - ex college sweethearts with FL having a slight selective amnesia
• With death/amnesia separation plot
  • Autumn concertot (Taiwan) - were in love when they were in college  
  • Winter sonata (Korea) - were highschool sweethearts
  • My love Eundong (Korea)
  • Devilish joy (Korea)

Thanks you all for  the recommendations! I'll check them out.

Currently giving Discovery Of romance  a chance :)

<3

Devilish Joy - the main leads were in love but the male lead got into an accident and has amensia so he couldn't remember the FL. they meet again after a time skip