The singer Neyo has a song called "Back To What You Know" where he says he's "fighting a memory of something that used to be" because the person he is dating is still thinking about their Ex Boyfriend.

Have any of you had this problem where you were dating someone that just couldn't stop bringing up their previous relationship or even still spent a lot of time with their Ex?

Have YOU ever been the person dating someone and still had the Ex-Boyfriend on your mind heavy?