Kristen Stewart who? Robert Pattinson has a new girl in his life and introduced the brunette beauty at a birthday party for actress Shoshana Bush, Radar Online reports. Sources told the website that the two held hands the entire time and snuck kisses at the Los Angeles party.

"Rob and the brunette turned up around midnight. They were cute together," the source said. "At one point, he was talking to someone and she wandered over and grabbed his hand and pulled him to over near the pool. Their hands were all over each other!"

It seems like the "Twilight" actor's friends approve of the new relationship telling Radar that the couple were a good match together.

"She's really sweet and [has a] girl next door vibe. Rob is actually really nice and humble. They're a perfect match," the source said.  

It has been rumored that Pattinson was having a hard time moving on from Stewart. The two split in May after it was revealed that Stewart was cheating on Pattinson with married director Rupert Sanders. Back in August it was reported by Yahoo! OMG that Stewart also had a new love interest.

According to the celebrity website, the actress is dating her "Camp X-Ray" costar Lane Garrison and has reportedly moved him into her Los Angeles house with her.

"Kristen was enjoying Lane's company and he was spending a lot of time with her at her home," a source told Yahoo!. "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 in Los Feliz."

The source said that Stewart had been leaning on the actor following her split from Pattinson but her family wasn't happy about the new romance because of Garrison's troubled and criminal past. He spent three years in prison for vehicular manslaughter after a drunk driving accident, Yahoo! reports. The accident resulted in the death of a 17-year-old boy.

Garrison was also arrested in April 2012 after being accused of slapping his girlfriend and Playboy Playmate Ashley Mattingly across the face.

"Kristen's big brother, Cameron, has told her he's concerned about the new relationship, especially since his recent arrest after his jail term," the source said. "He's a much darker person than Rob and still goes to mandatory AA meetings every week following his battery arrest."