Help Remembering the name of a drama

I can't remember the name of the drama, but it had a scene where the male and female leads are on their honeymoon and they run into an old classmate. The old classmate locks the female lead in her hotel room so that she can seduce the male lead, but the female lead escapes the room by triggering the fire alarm with a lighter or something. The male lead is a lawyer or a divorce lawyer. If anyone knows the drama that I'm talking about please let me know!!

It's Autumn's Concerto. 

 looktothestars:

It's Autumn's Concerto. 

I watched this drama this year & even then I couldn't remember... something is seriously wrong with my memory. anyways thank you