Robert Pattinson is allegedly dating model Dylan Penn and a source shared why he is so into the Hollywood starlet.

A friend of Pattinson's said she shares similar qualities to his ex-girlfriend, Kristen Stewart. The insider reveled the Cosmopolis actor is attracted to Penn's great sense of humor and the fact that she isn't too "clingy."

"One of the reasons Rob likes Dylan so much is because of her quirky sense of humor," a friend of Pattinson's told Hollywood Life. "It's funny because that's what Rob liked so much about Kristen - her sense of humor. Dylan is super sharp and is quick on her feet. She's very confident and comfortable in her own skin, and this is definitely a turn-on for Rob. She's far from being meek and clingy."

The inside said Penn, the daughter of Hollywood actors Robin Wright-Penn and Sean Penn, also shares Pattinson's passion for music.

"Rob also likes the fact that Dylan is so into music, all kinds of music," the friend revealed. "Like Kristen, Dylan certainly walks to the beat of her own drum."

Pattinson has taken a strong liking to Dylan but he will take his time before jumping into a serious relationship again.

"Rob hasn't had such strong feelings for someone since Kristen," the insider added. "But he's taking the relationship very slowly and wants to keep this new relationship out of the public eye. This really came out of left field for Rob - he wasn't looking or expecting any kind of long term romance."

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 Life & Style Weekly was the first to report that the British heartthrob is dating the model. Two eyewitnesses shared accounts of seeing the new couple being affectionate in public and at a private gathering in his home. They were spotted together at Los Angeles' nightclub Viper Room on Sept. 7. An onlooker said they were "touchy-feely and very flirtatious."

"There was a level of comfort there," the eyewitness added. "You could tell they've hung out a few times."

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Another source told the publication that when she visited Pattinson's home in a previous occasion "he put his arms around her."

"Then he was kissing her neck and talking all lovey-dovey. It was clear they'd been out together before. When fellow guests left at 5 a.m., Dylan was still there," said the second eyewitness.

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The dating reports debunk previous claims that Pattinson is in a relationship with his personal trainer Sydney Leibes. They were romantically linked after being photographed leaving the gym together.