After a plague killed all the males from their planet an alien race comes to earth in search of the most compatible intelligent species.

They compete with earth women for the affection of men.

Pros:
> aren't picky
>They'll do anything to atract a guy
>won't suddenly become bitches after they got the guy
>won't risk the relationship
>know their place
>would love you for who you are even if our species is totally hideous for them.
>won't judge you cause you are too alien to their species
>their moms will be nice to you

Cons:
>They look like something that came from alien or starship troopers.
>Needs more space than a human.
>Eats more than humans
>Wants a home full of kids
>Propense to get sick
>Openly aggressive towards human females
>Their moms will like you a lot
>You'll be targeted by feminist terrorist groups, if in a relationship they'll try to kill your waifu, if not you'll get raped by landwhales who reek like shit for months before being castrated and killed