fake friends

So i met 3 new girls at school and since I’m not 100% popular I started to talk to them. A month later, we all became super close. To fast forward all of the useless stuff, they have gone against me because one of them told the others that i talked trash about them. I had to sit on their table yesterday and they kept talking about me and made me super uncomfortable... and the girl who did this is super ghetto and will get me in trouble since i have a tendency of beating people up or scaring them whenever they piss me off.