According to a source, the actor, 33, who met Kristen on the set of new film Camp X Ray, has even temporarily moved into her home as they reshoot some scenes.
The source told Yahoo's Omg!: ‘Kristen was enjoying Lane’s company and he was spending a lot of time with her at her home.’
‘He doesn’t live in LA so he moved out of his hotel when they became close and moved into the guest wing of her house.’
But Lane, who is ten years Kristen’s senior, spent three years in prison for vehicular manslaughter, after a drink-driving incident left a teenage boy dead. He was also arrested in 2012 after allegedly slapping his then girlfriend, Playmate Ashley Mattingly, in the face.
This has understandably left friends and family of the star worried about the relationship.
A source said: ‘He’s a much darker person than Rob and still goes to mandatory AA meetings every week following his battery arrest.’
But apparently Kristen is un-phased by Lane’s violent past and is reportedly ‘really enjoying getting to know him.’
Rumours of the pair’s relationship will no doubt upset Twilight fans, who were ever-hopeful for a reunion between Stewart and Pattinson, who broke up earlier this year.