Ethan is a sociopath. His advice to Ashley is to be a selfish hedonist who takes what she wants with no regard to others, and it is clear that he follows his own advice.
Though to be fair, the other males are not much better.
Jack is a narcissist and a user, vain and shallow.
Eric is a wimp.
Eric's Dad is a a pervert and probably abusing his own daughter.
Doug is a complete retard.
Wilson (and presumably Edgar) is a misogynist asshole drug dealing gangster.
Tyrone doesn't seem too bad so far, but we haven't seen much of him yet. His approval of Jack and his behaviour in the car are not showing him in a good light though.
Ashley's Dad is a fat slob loser (though to be fair to him, that seems in part be due to his awful wife).
Only Dave seems like a reasonable guy, if a bit boring.
I suspect Evakiss doesn't actually like men...