i would like if the ex is the second female lead and if she left him or betrayed and left to someone else and the ml lead falls in love with the fl

I've watched some dramas like this:

• Suspicious partner 

• My lovely Sam Soon

• Fated to love you 

• Weightlifting fairy Kim Bok Joo 

• My Girl (2005)

• Fight my way


Hope it helps ^^

Fight My Way

9 Ends 2 Outs

Lie to Me

The Sand Princess

Wannueng Jaa Pben Superstar