DO I HAVE A RIGHT TO BE MAD

So we are staying at my aunts house down in OBX and my boyfriend has the nerve to let his friend into my phone. Sends screenshoots of messages between my stepmom and me about when me and him got into a fight and then used them to throw them back at my face. Like this can not be fucking okay. For anyone to think this is okay. And now they're both pissed at me because I think I have the right to be honest with my family and not be yelled at for it.