He has kept you alive, despite you trying to escape every so often. You being someone he loved, he wouldn't dare let you leave the temple, why would you want to? You were worshipped along side him, with you being referred to as a goddess, yet you were terrified of him, because he was an upper rank demon; specifically number two.

But oh how he loved you more than anything. He wouldn't dare let anyone hurt you. If he were human, he'd want to start a family with you. But he can't.