The story
She lost her memory. Her boyfriend told her she was dating his best friend.
Emma has it all planned. On her birthday she's going to sleep with her boyfriend Blake for the first time. Then a chandelier comes down, knocks her out and wipes her memory. Blake has been cheating on her with her best friend, so to cover it up he tells Emma that her boyfriend is actually Dylan, his best friend. She believes it and starts seeing Dylan, and then she learns his secret. Dylan has quietly loved her for years. When her memory finally comes back, she's furious that he lied to her. But Dylan pulls her close and tells her the only lie he ever told was acting like he didn't want her.