Have you ever wanted an ex-boyfriend back?
If so- examples.

More particularly, could you say whether (1) the ex left you, or (2) you left the ex.

(really more interested in (2) situations, or ways you think you could want someone you left back. How they'd have to change, but also still have the masculine appeal)

examples:
You see they've changed the bad things about them,
Maybe they haven't changed but you just miss something about them,