Love is proving to be a battlefield for Kristen Stewart. First she ditched her longtime boyfriend for her hunky Twilight co-star Robert Pattinson -- which infuriated her best friend and Rob's onetime hookup, Nikki Reed. Then when Kristen, 19, and Rob, 23, were finally free to be together, work tore them apart: While she's shooting the Joan Jett biopic The Runaways in LA, he's on the NYC set of Remember Me getting flirty with leading lady Emilie de Ravin.

As if all that weren't enough, now a member of Rob's family in London is warning the actor to steer clear of Kristen. "I don't think it would be a good idea for Robert to be in a serious relationship with Kristen," his aunt Diana Nutley tells Life & Style in an exclusive interview.

Hear more of what Rob's aunt has to say in this week's Life & Style, on newsstands now!

Photo Credit: Retna