<human>: So I've been in a relationship with this girl for 1,5 years. I broke up with her because it all didn't feel good. I couldn't give her the things she gave me, we didn't fit in my perspective. But that aside..

The breakup was two months ago. I don't want to be 'that stalker guy' but I found out via facebook (yes i know) she was already hanging with someone else one week later. So I know this doesn't say much but we live in the same town and I work at a grocery store and for the past few weeks she always shows up with that guy and I am really sure they are together now..

The things that bother me are that when I see her at that grocery store, I get all shaky and scared. I do not know why.. Always when she comes there, she is with that guy.. 

So.. I am not over her yet and every time I want to do something with my friends I secretly hope to see her and she will know that I am doing fine (which I am not ). I still miss her but can't be with her.. She doesn't talk to me anymore and has a new boyfriend.

What to do..?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Ex girlfriend is with someone shortly after breakup, wanting to show her I am doing fine too. -> Can't stop thinking about her even tho I've removed her from everything. (because she keeps showing up at the store)