Ex loves me but heads not with me?

Time apart can certainly make the heart grow fonder, unfortunately this isn't always the case. If you love him, and truly believe he loves you give him the space he needs. I wouldn't wait years and years, but some time isn't bad. If in a few months see where he is, if by that time he's not ready it may be time to move on. I know that moving on when you love someone isn't easy, but sometimes it's the only thing you can do.