<human>: Can you provide a brief overview of the text?

So my ex, a 23 year old girl, and myself, a guy of the same age, broke up months ago. I'm talking *mooonths* ago. Holy shit, I just counted and its actually been 8 months. 

Anyway, getting to the point. I recently moved to a different city, and found a box containing a ton of old stuff. It was a bunch of mementos from everyone ranging from birthday cards from relatives/friends to newspaper clippings and ticket stubs. 

Among these relics, however, I found a damn gold mine of pictures of her and us together (senior prom, too) and a couple hand-made cards/letters she made me. She used to do that a lot, since we were long-distance for a while. Anyway, they're really sentimental and I feel like throwing them away would be wrong. However, we're not together anymore and we don't even talk. She was a huge part of my life for a long time and we were together for almost 5 years. 

Should I throw these things away, and is holding on to these items holding me back from "moving on" completely? I've seen and been with a few other women, and I've moved on after the break-up. She's moved on as well.
<bot>: should I throw away mementos of my past relationship, and would I be a weirdo if I held on to them?