<human>: Can you give me the gist of the text in a nutshell?

Okay so me and my ex broke up back in October after a nearly 2 year long relationship, for reasons still unknown to me.

We've stayed friends since then and I've been seeing someone new but it hasn't got serious yet, and I thought I was genuinely over my ex

I found out a couple of days ago she's now with someone new, and while I am happy for her and glad she's happy again, part of me is.. Down about it, to say the least.

I'm not sure what I should do to deal with this, I know she's happy with this new guy and I wouldn't do anything to try and come between them, but every time I see pictures of them together or she mentions him it just annoys and frustrates me.

I was thinking of just cutting her out of my life, as it feels like the only way I can properly get over it all. 

She doesn't need me anymore, I used to be the one that would be able to cheer her up when she was down but now she's got this new guy and has said that he's able to do the same thing.

So, should I? Should I settle whatever needs settling (She has some stuff of mine that I need back and vice versa) then cut her out of my life?
<bot>: Thought I was over my ex of nearly 2 years, she's with someone new and it made me realize I'm not fully over her, should I get my stuff back from her and cut her out of my life or not?