Angel Eyes (But not pretending, they were in love as teenager, but the girl was blind, after years they both grow up and she can see now, but she doesn't know the guy)
Fai Ruk Game Rohn (Thailand) (They were married in college year, they broke up, and after years, they meet and pretend they don't know each other, but their pretending didn't last long)
My sunshine (China)
My best ex-BF (China)