Romance x3

Looking for drama where either:

1. The ML knows the FL likes him and uses this to play/tease with her. Maybe he sees her more as a little sister type?

2. The FL looks up to the ML, kinda like as if he's a mentor or role-model to her.

3. They have a relationship when they're young, then breaks apart for whatever reason, then many years later they're still unable to forget each other AND remain single AND completely unmoved by any other suitors, then they meet again. 

Thanks!

Scenario1

• Reply 1994
• Khun Chai terratorn
• Sprout
• Kingyo club
• Producers

Scenario 2

• A poem a day
• Doctors (Kdrama) or Kalp Atisi (Turkish drama)
• Les Interpretes
• Chicago Typewriter
• Please Love the Useless Me

Scenario 3

• Angel eyes 
• Stairway to heaven
• My Sunshine
• Heart to Heart
• Wild chives and soy Bean soup