What happened to morals guys...

Isn't the fish guy a minor, why does the Panther dude have weird imaginations about him and get so flustered around a teenager when he's a literal adult and his teacher? I'm so tired of everyone thinking this is ok?? I do understand he's almost an adult but he is still deemed as a child, acts like one, and is still in highschool. I wouldn't mind the second couple if the author just did a different approach on this couple and actually had an appropriate age difference:(