Amber Rose and Machine Gun Kelly -- Ready, Aim, Bang (PHOTO)

Amber Rose and rapper Machine Gun Kelly are on like Donkey Kong ... because nothing screams "together" like an airport pickup.

Rose met Kelly at baggage claim as he helped himself to handfuls of booty ... so say other disembarking passengers.

Kelly may want to talk things out with his boy Wiz Khalifa -- the guy Amber called the love of her life earlier this month. They share the beat in "Mind of a Stoner," but that doesn't necessarily mean he's cool with sharing the mother of his kid.

We can't figure out whether she has a type.