You Can’t Always Get What You Want
Oh, how we dread this kind of text (both sending them and getting them). It’s better to cut your losses and accept you’re never getting some of your stuff back. Walk away now and start forgetting, it’ll do you good.
If your ex has moved on and they’re seeing someone new, let them be happy. Don’t bother them with texts every other week asking if they’ve already broken up with their new significant other. It’s a horrible thing to do. Wish them well and go find some happiness yourself.