Best Friends Or Nah

I walked to my class and sat with my two best friend Britney and Marisa. We were talked, then a tall girl with dark brown hair walked in. She was looking for a spot to sit in and out of no where Britney said:
"Hey Sara over here"she said. The girl walked over to us and sat in the empty seat next to me.
"You two know each other"Marisa asked
"Yea her parents know mine"Britney said
"Yea, I'm Sara"Sara said
"I'm Lexi and this is Marisa"I said pointing at Marisa
"Well I'm new around here so is it ok if I hang with y'all"she asked
"Of course"I said. Oh Boy, this is gonna be a start of a new friendship............