do i stay friends with those 3 classmates in my class :/?

[Alvaro Bravo]

You can not worry about what people think about you, life's too short. If their bullying bugs you that much you should just ignore them and go your own way. You shouldn't have unfriend/unfollowed them them in my opinion. It'll make them notice you're avoiding them and they'll put one and the other together and they'll realize it was because of the bullying. Depending on how they are, they might bully you more because they realized it bugs you and you don't want to be their friend any more, or they might stop bullying you in sake of your friendship. You should just friend them and follow them again and go your own way. Forgive or forget. Regrets are pointless, think about "regrets" as experience.