My girlfriend(20F) Broke up with me (20M) over text and then a week later slept with another man after 5 years in a realtionship. Now she wants me back and i tried but it didnt feel the same and broke it off.. still dont know if i did the right thing

Little back story here we were together 5 years im 20 years old now and we met in highschool and have been through everything together.. She broke up with me over text after not even giving me a chance to call her and then a week later she goes and sleeps with another dude. A couple days after that we start talking again and i go over there to try and make amends because i think that it can still work and then we have a great day and at the end she tells me what happened.. i dont remember how it was even brought up because that night is a whole blur now but i remember shaking and running to my car and her following me out there trying to explain herself . She said that she hated it and it was a mistake and that it didnt feel the same.. I said i still loved her and that i would still try to make it work because i really care about this person and she has been with me through everything.. fast forward a couple of days and we were texting and i was being crazy saying how much i loved her and wanted her back and just a bunch of sobby shit like paragraphs and paragraphs of it .. eventually i went over there and we had a good night again we talked about everything and we eventually wound up having sex but it just didnt feel the same. It was like i looked into her eyes and was picturing everything that happened . I was up all night because i stayed there and couldnt sleep just letting my mind tear me apart while im in the same bed as her. I found out the next day that she was still snapchatting the dude she slept with while we were broken up for a week . I went home and ended it for good the next morning. I guess i just need some random people to snap me back into reality and tell me what i did was right .. its still really fresh and i dont know how to feel

I will respond to people who want to know more because this probably didnt make much sense i have no one to talk to about this in real life and i will be taking everyones advice.. thank you in advance :)

EDIT Thanks to every one of you for this, i really needed it and appreciate every single one of you

TL;DR Did i make the right choice by cutting things off? Or should i regret what i did and was she really down for me?

Submitted May 01, 2021 at 06:21PM by AcanthocephalaFar730 https://ift.tt/3xFM0AA