You can gently and tactfully suggest keeping those pretty frames and filling them together with new memories of the two of you.
Watch out for a partner who turns affections on and off. Your partner may be cold and pull away when feeling guilty about not having given the same kind of love in the past relationship.
Your partner doesn't need to set the favorite sweatshirt and all those love letters out on the curb. As for photos on display, it’s one thing to have a group picture that includes a past partner on the wall.
It’s another to erect a shrine to that person or plaster the bedroom with a display of the glory days together.
There’s no way to know for sure without talking to your partner about your concerns.