<human>: Provide a brief overview of the text.

Struggling with break UP. also 24M, she was 21F. my bad.

Sorry to bitch, Reddit. I just need guidance really badly right now.

At the beginning of June, my gf of nearly 3 years (both first loves, we also lived together) and I drove across the country to get her to a summer internship. I flew back and planned to go back for her in Aug., but two weeks later she broke up with me because she felt i was too negative throughout our relationship (this is totally fair, i struggle with anxiety and depression and didn't work on it enough, but still was shocked and felt blindsided).

anyways, it sucked, i tried everything to get her back; didn't work. she is very attractive and it turns out she got tinder three days after i flew back home to "meet people". 

I've since found out that she actually asked a guy out the day after she got the app, a week and a half before she broke up with me. She kept sending me normal "i miss you/i love you texts", and when she did break up with me, i asked her specifically if she had been talking to other guys and she said "no dont' be ridiculous".

I just feel betrayed and used. Obviously all the hooking up she is doing now that we are broken up is her business, but man, it hurts in the feels to know she was starting off BEFORE she broke it off with me. We were so, so in love and obviously she fell out of love over the past few months or however long, but it hurts so much to think about how much things have changed.

Again, she is very attractive and its been easy for her to meet all these other guys - but for me, I'm average-ish looking (although im having doubts now) and although she thought i was handsome, im just worried she had low standards or something and i got lucky, because ive tried tinder out the past few days and had very little luck.

I just feel worthless and unattractive. What the hell am i supposed to do? I want to distract myself and hook up with a bunch of girls, but that doesn't seem very realistic at this point.
<bot>: girlfriend effectively cheated on me before she broke up with me, she's hooking up a lot now and im average looking and cant get anyone....how to cope?