Demi Moore is dating a NZer! Demi & Martin Thu-26-Jul-12 10:41 Share this By Jay-Jay Feeney Remember Actor Martin Henderson? He used to play Stuart Neilsen on Shortland Street, then he went to the US and got a gig starring in Britney Spears’ music video for her song TOXIC. Well guess what? He’s 37 now and he has a Hollywood girlfriend… someone who likes younger men…. Martin Henderson is dating DEMI MOORE!! She’s 49. You May Also Like Become a fan of The Edge on Facebook and on Twitter .