Sakul Ga (2009)

Ngao Asoke is similar to Sahul Ga :
-Poor girl
-Age gap between ML and FL
-Secret but pure relationship between ML and FL

Sakul Ga is similar to Kaew Lorm Petch :
-Same grandmother
-Poor female lead becomes a rich heir and knows her true identity

Talad Arom is similar to Sakul Ga :
-Same female lead
-Aunty is the Female lead biological mother
-Hidden identity
-Mother's death