Regrets
“I love you but I am just not in love with you.” Not fully unreasonable in itself but he still proceeded to contact me and tried to get back together for over two years after the (two-year-long) relationship ended saying he made a mistake.
He finally stopped when I told him I was trying to enjoy a night with my boyfriend and he was disturbing me. He called me all kinds of unsavory names and that was that, never heard from him again.
Story Credit: Reddit/Niki_Anne_Goldeye