DEMI LOVATO, RYAN PHILLIPPE DATING

She's 18. He's 36.

But the laws of celebrity attraction apparently knew no boundaries when it came to Demi Lovato secretly connecting with her most recent boyfriend...Ryan Phillippe!

E! News has learned exclusively that Lovato has been quietly dating Phillippe, the actor and divorced dad of three (including 2-week-old daughter Kai with ex-girlfriend Alexis Knapp), over the last couple of months.