Eternal Sunshine of the Spotless Mind

This is a continuance to Strangers on a train, Harry's point of view.

After three years Louis breaks it off. Harry is devastated. Then he finds out that Louis has had his memories of him erased.

Why should he be the only one suffering from the memories? Harry contacts the company Lacuna Inc. If Louis erased him he will erase him too!

But as he relives the memories of their relationship he realizes that he made a mistake. Will he be able to stop it before Louis is wiped from his mind completely?

I totally stole the idea from the movie Eternal Sunshine of the spotless mind.