caz,
have you asked him outright, if he would take yu back?
i would ask him, especially as you are able to be so open with one another....
if he says no then, then you know you should move on.... but if i felt like yu, i would be inclined to ask him outright.
im not sure i agree with Ward~Minter, as regards six months not being a long time. Who knows what is the right length of time, people deal with things differently and handle hurt in all sorts of ways.
as i said, i would just ask him, and then take things from there.
good luck xx