Merry Christmas to you too. I'm sorry about your break up, Im sure it was for the best if that is the decision you both made.
I wish I had more advice on how to get him to go in the tray. I'd say clean up the mess not on the peepad with a papertowel and then lay the papertowel on the peepad in the tray. Maybe if he smells his own scent there he will start to go in there. Good Luck!