He has a strong bond WITH you already... but he needs to be cut OFF from it in order for that bond to be triggered...
Each time he has any kind fo contact with you... even dropping by your home to pick up the mail when you aren't there he REFRESHES that bond of home and family all over again...
Once he realizes he CAN'T have that bond he will gradually become HUNGRY for it... it will make him anxious to find out hwo youare, what you're doing.. who you aer wtih etc...
Imagine motehrs who let their kids off to school for the first time... Or their child's first night away from home with a friend.. that BOND kicks in...
Absence CAN make the heart grow fonder IF they know they are unwelcome to return... ie : He needs to know you arne't Plan B or his safety net anymore.
As long as you keep contact it offers him that reassurance that he can come back at any time.
Once you cut that cord he will start to panic... YOu have likley seen him leave a LOT of excuses to make contact over and over again...
Even him coming by to pick up the mail was an excuse... He WANTS to feel welcome to return when he feels like it...
YOU have to tell him NO
Yes, he has legal rights to the house, but you can REMOVE all EXCUSES to return and NOT be there when he does...
