My brother just watched as I got punched

I posted before about how I look through my friends phone secretly when she’s not looking because I know she’s been sneaky towards me in her texts before.

So we were hanging out at my house and I looked through her phone when she went to the bathroom. My brother saw me doing it and told me to stop so I did but I forgot that I left my name in the search bar so I tried to sneak and delete it and she caught me and pushed me so I got up to fight but before I had a chance she grabbed me by my hair and punched me about 5 times before my brother broke it up,

After I was mad at him because he could’ve stopped it way sooner and all he said was “bet you won’t look through another phone again”. This is my blood brother and I’m ready to cut him off and never speak to him again.