what to do with the things from a situationship

for context, i (26f) cheated on my bf (25m) with a coworker (31m) for a few month. the reason may not be relevant but at the time i couldn't bear when my bf was busy and this guy gave me attention the whole day (it obviously was because we worked together, but i was too dumb to understand). i finally ended it, also broke up with my then bf after coming clean. now, the other guy (31m) was really sweet, he gave me letters, gifts, got me little treats, and i collected them, here's the thing, I'm not sure what to do with what i got; the least sentimental gifts (little toys from the treats, a book, a couple of lps) i gave them away to friends, but i'm left with the letters, a hoodie i used to borrow and a some jewerly. what am i supposed do with all of that?

i've been thinking of selling the jewerly, and send the money back, giving the clothes away too, and maybe breaking the pottery, but it may be extreme.

also! i have some pictures i took, and screenshots so, i'm thinking if i should delete that too