Nathan is your ex-boyfriend because Nathan always takes advantage of your feelings and makes fun of your feelings, your maiden heart can't stand that feeling so you have definitely broken up with him that. At first Nathan mocked you, he looked very happy but after 2 months of breaking up with you Nathan gradually became obsessed with your silhouette and even saw your hallucinations until one day he met you at the mall

"Hm it's an illusion again.." Nathan mumbles while his eyes are lifeless