<human>: Can you provide a brief rundown of the text in within 3 sentences?

My ex and I broke up months ago. I'm finally starting to heal and move on. I miss him a lot, and sometimes I still cry when I hear love songs, but I've been able to function again. 

But I'm upset that he can function too. Could I be more selfish?

Some weekends I hang out with friends, go to lunch and see a movie, I even went out clubbing and had a great time! But then I see him posting on social media that he's out with friends too and that he's not missing me and that maybe I wasn't as important as I thought I was.

I don't need a bunch of comments telling me I'm selfish or immature because I already know and that's why I'm posting here. I guess I'm looking for advice on how to stop feeling this way or maybe some support saying that it's normal or that it'll go away.

I don't know what I'm looking for. I just feel so sad that this person used to love me more than anyone has ever loved me and now I'm not even sure that they remember that I exist. It kind of sucks.
<bot>: It really hurts to see that my ex is over me and I'm not logically sure why I'm feeling this way and how to get over it.