An unappreciated method actor leads a double life to prevent his fiancé from discovering that the alias he created to make an x-rated film has become a star.

Totally love this logline...it actually tells the whole story...the inciting incident, the complications and...surely, a nice heart-warming romantic comedy in it's climax. You could get rid of the word 'method' as the story applies equally whether or not the actor follows a certain method (pun intended).