I messed up right now, had a massive argument. What do you think?

Cody2004
I'll give a little bit of context here so I decided to date my best friend a couple days ago it was my first time ever dating. I had my first time with her and everything. She ended up cheating on me within a couple days at some point before Valentine's Day I know we weren't dating on Valentine's Day. She kept saying it's because I was asleep and she didn't want to wake me. There was a few of us over and she ended up doing stuff with my friend and got caught on my sister she pretty much kicked everyone out thankfully.


The issue is she just called me and I made mistake of picking up the phone, been trying to call me for the past few days but she wants to get back together I don't want that. She started screaming at me and insulting me. She brought up my mother who passed away very recently from a vehicle accident. My sister started screaming at her because it's only me and her now because father passed away a while back what's rightfully that would piss me off too but I just want her to go away.

I know I'm falling behind in school now but at the same time I don't want to go because she's going to be there I just want to avoid her let alone my sister being the same age means all three of us are in the same classes I don't want to deal with those two even though she's my sister she's going to probably get in a fight tomorrow. I don't even feel like I'm in any condition to drive either I don't know what to do
Updates
2 mo
I forgot to mention the argument was mostly about me getting with another girl even though I'm not all I did was I tell somebody I would think about it and all this happened.
I messed up right now, had a massive argument. What do you think?
3 Opinion