It’s ok to not like someone and still be polite to them. It’s not ok to be rude for no reason, nobody likes a dick even if they’re a funny dick.
It’s ok to think someone’s selfies are lame but like your own. It’s not ok to leave comments saying that persons selfie sucks, because no one cares what you think.
It’s ok to feel things and not explain why. It’s not ok to be a jerk because of your feelings and not explain why.
Be nice, be kind, be interested/interesting, take no shit.