She quit smoking and started being more active, adding, "I've learned from my boyfriend. Nikki Reed - who plays Rosalie Hale in the vampire-themed franchise - is dating Paris Latsis.

Reed, 21, who has been dating Latsis, 27, since this summer, was so inspired by his love of outdoor sports that she quit smoking.

“Instead of gaining weight, I lost weight,” she says.

“I started going to the gym and taking care of myself.

I’m into outdoor sports like hiking, windsurfing, water-skiing.

The actress has been dating the socialite, who previously romanced Paris Hilton, since 2009, but she has now revealed the relationship is over.