Caleb Followill’s sex is on fire for Lily Aldridge: They’re engaged.

Kings of Leon lead singer Caleb Followill is engaged to his girlfriend, Lily Aldridge.  Followill’s bandmate Nathan got hitched this past November so now two of the Leon men are off the market, officially.  For now.  Aldridge appeared in the Kings of Leon Use Somebody video.  Congrats to the happy couple.