Aight so my ex and i went on a break in april 2025, during this time i had no access to a phone as i was prepping for jee, but we sometimes texted on chess.com. Around November, she texts me to never come in her life again and to go n die. We hadn't talked since August fyi as i didn't get time to open my lappy.  
I read this text on 20th nov and went to her house unannounced on 22nd after my nsec. She tells me how he's treating her better and how other people told her everything. I'm standing there freaking confused because we had a private relationship which only became public after she told her best friend when we went on the break.  
Fast forward, my mental health declines and i the last time i text her was on new years. Fast forward 6 months, she randomly texts me and calls me on 6th june. (Also she sent me a sms in may congratulating me for my board results) I pick up and she talks normally like nothing had happened. We have been calling almost every day since.

The thing is she is still in a relationship with that guy but that guy most probably doesn't know thay she's calling me everyday. Idk what to do now. Help.

I leave for college in like 3 weeks and she's in 12th btw.

Ex talking to me while still being in a relationship