I hope you got some answers. What a cowardly guy to end it like that after 7 years and an engagement. Not so much as a discussion about his feelings. I know it may not feel like it now, but you dodged a bullet.
If you think this is bad, try this one on for size:
Somebody I know dated a guy for 7 years; he had his own place and she had hers.
She came home from work one evening to find nearly all of the furniture gone --- she thought she'd been robbed and was all set to call the cops, until she looked on the floor and found a note addressed to her.
Turns out her bf took all the furniture that he bought her and the note was more or less a boilerplate "Dear John" letter -- telling her he was moving on and he wouldn't be seeing her anymore.
She tried calling his house, his workplace and his cell -- all 3 numbers were changed. She tried asking for him when the receptionist got the phone: she was told he was not available. He moved and left no forwarding addresss, according to the super and landlord.
She never heard from him again.
The Dear John letter was bad enough -- he had to go and take all of the furniture he bought, which were already more than a few years old?