I dont know what was even real

I was with my most recent girlfriend for almost 2 years (since highschool but we both graduated before the end of the relationship) and she “ended it” a month ago. We were making plans to hang out that same day then out of nowhere she starts complaining and one thing leads to another she wants to leave. I ask her if we can call it a break so when the times right we can come back and talk to see if it can work and she agreed but said she “doesnt want us waiting for eachother and a potential relationship.” (Important later). 2 weeks go by and i feel like i was in a better place to at least have that conversation with her so i reached out and told her. She waits a day then immediately hits me with saying she is only interested in being friends and returning personal belongings but said if i dont want to be friends she will bring belongings back to my house. I doubled down saying we need to talk and she left that on opened for 2 weeks now. Heres where it all gets even weirder. She still follows me on every platform, still has the heart background theme on our ig chat (main talking platform) and even kept the nicknames on there, but unfollowed and removed my alt/affiliate accounts, still views my stories and all, but removed me from her private story stuff, and shes still in our life360 group just has her location paused. The fucked up part is how shes now “with” a coworker she has at a literal summer job before going back off to uni. I found that he posted her literally last night. She has made no effort to contact me (other than her accidentally calling me once), give back my belongings, or do literally anything. Keeping me in complete darkness. To me it almost seems like a tactic shes using so like thinking if i dont see it i wont know so i can be a rebound later. It all just sucks cause that not waiting for eachother clause she made seems like she was planning on getting with this guy from the start and she also used to pride herself on how she always gave herself time after breakups before starting new ones but this was less than 2 weeks at MOST. Now im questioning our whole relationship, the morals we had, ever encounter, every promise, absolutely everything doesnt seem real. I have the urge to break or burn everything shes ever given me and take back my shit she still has. It doesnt seem like she deserves any of it and damn well didnt deserve me. So why the fuck does it hurt so god damn much. She truly broke me. Made me love her this much, absolutely ruined everything i felt for her, but somehow i DO still feel for her. I dont understand. I need help.