After the boyfriend lost his memory because of a brain surgery,the girlfriend must pretend to get know the boy again for keep their relationship.

This logline is very promising and it will be most interesting to see how the writer will turn it into a worthwhile script. Good Luck!!!

Good logline Weize, it's got all the makings of an intriguing story. Maybe you could introduce the boyfriend as 'a young man' and the girlfriends name eg. , Joanne, his girlfriend....
Cheers

Hey Weize, I like your logline. It sets up for an interesting story. I can only suggest a couple of minor changes: After a young man lost his memory because of brain surgery, (name), his girl friend, must pretend to know him in the hope of keeping their relationship.