At least until Ryan's ex-girlfriend gave birth to their daughter. That kind of cooled things down, but it hasn't been the only thing.
Demi just released Skyscraper, and she's been throwing all of her attention into the promotion of her music.
So while the couple is still seeing each other, we'll wait and see if this one lasts.
Clearly they're attracted to one another, but they seem to be in two completely different places in life.
Did we mention she's 18 and he's 36?
It's going to be really hard making this one work. Good luck, though!
[Image via Andres Otero/Apega/WENN.]