Do i say sorry or not?

after school today i was playin with my friends. and the boy that is only my friend or was? was talkin to me and showing me his family. then him and his little brother was fake fightin. he is 14. and his brother is 2. and all of his friends were sayin for his brother to beet him up. so he did. but the 14 boy was laughin. so i thoght he was jokyin around. case he was laughin.then he said to me that. i turned everybudy against him even his own brother. then he said that my brother is cooler and dont smell like me. so do i say sorry or not?