Alright so I just got out of this relationship with my girlfriend, she cheated on me but apparently she still loves me and wants me back and shit cause she's miserable without me but fuck her HAHA
What's important is the other girl. She's been my friend since forever cause she's in my social circle. I had feelings for her before and I still kinda have them now but I don't think she likes me back or I don't have a chance (honestly) hahaha
Anyway, yesterday I filmed my school's prom video with her (the other girl) and since it's a prom video...me and her are supposed to act like we're a couple and stuff so in between takes when we aren't doing anything we just talk and walk around together. At one point she would even give me that little "bump" while we walk and she'd sit with me and stuff.
Then at one point, since I thought it was okay because we were platonic as fuck anyway I told her "Hey guess what? We're so gonna make (Name of my ex) so fucking jealous." Then she was like "heck yeah we will" Then she gave me a high five.
After that she started talking to the other guys at the shoot and stopped walking with me. Finally when everything ended, I was texting her then saying thank you and stuff hahah Then she said "I hope we made (name of ex) jealous

" Then I replied saying something like "Nahhh she doesnt matter anymore. What matters is that we had fun today. Anyway, what time's your party?"
She hasn't replied since.
Did I do something wrong or...like...what the hell just happened? Can someone please help me make sense of what just happened?