It's wrong to harass your ex.
Marks has just separated from his girlfriend of five years he still has feelings for her.
Mark wants to tell his ex that he still loves her.
Mark writes his ex a letter confessing he still loves her and leave it on her doorstep.
Mark keeps texting and calling his ex she doesn't answer him, so he shows up to her job and confesses his love to her.
Mark ex calls him and tells him that was so sweet and ask him to meet for lunch.
Marks ex is embarrassed, and she tells him she never wants to see him again.