I still have cards my ex gave me

I just realized this. We broke up like 2.5 years ago. As of 6 months ago I’ve been in a really good relationship with a new man.

My question is, should I throw away those cards?

Giving each other cards was our thing. And I kept them for whatever reason.

Our relationship went up in flames when I found out he was lying to me about stuff and a bunch of other things, it was a toxic relationship but lasted 3.5 years. I don’t have any interest in him anymore.

But I feel weird throwing it out. That was a bit part of my life. He was my first everything. I have no love for him anymore and I don’t care about him at all.

But I feel as tho having these cards is disrespectful to my current bf. But also idk.

Throw them out or no?

Tell my current bf or no?