It's been more than a year...

So why the hell is my ex still showing up in my dreams? Still don't understand, how a person that I have lost all desire to be with can still continue to invade my dreams. Just like I deleted all physical evidence of his presence ever being in life, why can't my brain do the same as well? I have moved on, he is never in my conscious thoughts, so why in my dreams. I sure some psychoanalyst will go on about some lingering desires that I have yet to address. But I can assure you, the only slight lingering desires I have towards him is how to get my expensive gifts to him back. That is all.