How To Get Over Someone

Not long ago I made a post about whether to continue seeing a guy I had been seeing but wasn't official with for 8 months. Things ended last Sunday and it really sucks although I've had pretty much a month to get over it as is since things changed between us initially then. Part of me can't let go yet and hopes he'll change his mind and realise he misses me, but the realist in me knows he's too stubborn and has probably found someone new. In fact I think that's why his feelings changed, if they actually did.