My ex treats his new girlfriend so much better. I was treated like shit but always tried. How can I stop feeling used?

Anonymous
Hi guys. I am a very shy, sensitive girl, but I went out of my way to take care of my last boyfriend. I would get him gifts, compliment him, spend quality time, give space. He often ignored me, seemed oblivious, never wanted to spend much time, & never reciprocated or seemed to notice my efforts. He was extremely stoic.

We broke up because I became so shy, that I withdrew into myself. I stopped giving affection, so he broke up. I just couldn't take it much more.

Now, he is with a new, younger girl, and they go to concerts, he takes pics with her, likes her photos. She is in mutual friend group with me, so that is how I know. It hurts to see them without me.

He needed huge amounts of alone time w/me, so the fact he spends time with her is huge. I feel used and abused & I cry almost every night. The thing is, I constantly asked him to go to concerts, plays, hikes, & hang w/friends but he never wanted to go. I always invited him places but nothing. They were all hanging at my friend's house the other night, even though he never brought me anywhere at all. Ever. I put a lot into him and got almost 0 back. It hurts so bad. This sounds stupid, but she's not even really pretty. I suppose he likes her better.

How can he treat her like this? I put everything I had in, & feel drained. I am a kind, sensitive person, & was considered very beautiful. I am now a shell of my former self. I have not left house in months, have been in sweats. I gained 20 pounds. I never want to date again; and I am so scared of giving efforts. My heart is gone and I just honestly feel betrayed.

Any advice? I really can't go on.
My ex treats his new girlfriend so much better. I was treated like shit but always tried. How can I stop feeling used?
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