sigh

I did maybe,, idk what happened we were on good terms i mean for me she's my best friend's cousin and an ex girlfriend of my brother,, I'd hang out with her whenever we got together in their house and eating out,, we would tell each other's secrets and gossip anyone we hate so I thought we were okay but then I told her that i kinda getting tired w my boyfriend so you know I told her "I think I'll tell him that we need a break etc-" It's the day where there's competition in school and we are both together in it,, then we kinda broke up,, week later,, another friend of mine slip something that my 'friend' told my boyfriend what i said to her,, and i saw some post of pictures of them together hanging out with some of their friends,, you know I felt betrayed to the point I questioned myself "what did I do wrong??" "how could she do this to me??" since then I unfollowed her on sm and didn't talk to her until now