This. It won't make sense or give closure, just further confusion. My ex (also a serial cheater) seemed offended when I said I left my ring in the desert during a post separation solo trip. "Of course I'm keeping mine, it's a part of our story!" The story he utterly trashed lol. Come to find out he also dismantled the first gift I gave him (personalized piece of art) but used my old furniture as an upgrade to his own, uses items I made, and displays a gift from one of my friends I forgot when packing.

None of it makes any sense and never will; we very clearly have different ideas of morals and respect, so why wouldn't we perceive the significance of possessions differently?