Ml chases fl when she moves on

Hi can you recommend me drama where FL falls first  for mL first or she is the first who start to have feelings. She confess her love to ML but she is rejected or doesn't get respond from ml. But when she decides to give up on feelings and trys to move on ml       chases her or confesses his feeling/love for her.

What I'm looking in drama is:

• FL Falls in love first but when she confess her love or try to show her feelings she doesn't get respond from ml.
• HERE is an important note and this is what I exactly want. Ml has feelings for FL or he knows deep within is heart that he also loves her but due to some reason he doesn't expresses  his love & doesn't respond to FL confession/ feelings. 
• After ml confess his love and when they are officially together.Ml is really caring, supportive and protective towards FL what I mean as that her treat her like treasure .
•  it's okay if the FL fall first but get rejected but it would be better if ml also likes FL but for some reason he doesn't expresses and and shows resistance towards fl feeling
• But when she decides to give up and move on he chases her or he doesn't let FL to move on and confesses  his feeling .

Some examples are 

Playfull kiss: FL falls for ml first. She try to confess her feeling but doesn't get respond from ml. Ml also like so what he doesn't expresses in time. When she decides to marry SML ML confesses his love. He Is really supportive & treats her well

Starry night starry sea: ml likes FL but he is resistant to be in relationship because his Mermaid. In this drama ml is insanely in love with FL. He loves are so much that is ready to give his life for her

My love from another star: ml starts to chase FL when Sml confess his feeling to FL. He also likes her the doesn't expresses because he is an alien

Dramas from any country & genrebut I prefer Korea and Chinese. Just you know story plot must be good and drama should meet above points. I'm mentioning this again  instead of recommending me drama where ml doesn't have  feelings for FL so he rejects her it would be better where the case is  ml does love fl but he don't expresses his love and he is resistant towards her confession. But when ml confess and they are dating/ marriage ml really loves FL deeply and he is always supportive and caring towards her.   what I mean is when they are eating or when they are finally together ml is not reserved and he falls harder for FL and he treats her ike treasure 

https://mydramalist.com/221-my-lovely-sam-soon

I think these dramas can be counted like you want:

Another Miss Oh 

Hospital Playlist  (one of the couples is like this, I think)

If you like Playful Kiss, maybe you can try It Started with a Kiss  (taiwanese Ver) and Itazura na Kiss: Love in Tokyo  (Japanese Ver)

A love so beautiful fits what you want exactly. The FL has always loved the ML. He's your typical cold, aloof genius lead. She's always the one chasing after him and like playful kiss, when she stops is when he realises that he's lost someone  precious. It differs from playful kiss in that the leads actually date before the separate. There's a bit of a time skip and this time it's the male lead who chases the female lead. I think you'll like it. 

It can get a little silly and juvenile but since I had been watching some seriously violent stuff before this drama, it made for a nice light drama before diving right back into the violent thriller ones

The secondary characters of https://mydramalist.com/680681-xinglin-spring-warm

Am also looking for shows that are of this genre.