The rumor mill has been that Robert Pattinson and Kristen Stewart are secretly hooking up. However, if a source is to be believed then this may not be true.

"Pattinson is not secretly seeing Kristen," a source has told E! news

Robert Pattinson who is reportedly dating Sean Penn's daughter Dylan Penn, was allegedly hooking up with his ex-girlfriend Kristen Stewart. According to Entertainmentwise.com, "R-Patz and Kristen are still passionate about each other and they hook up occasionally, when in LA."

Apparently, Kristen Stewart had spent a night with the Twilight star at his LA pad last month.

A friend close to Stewart has revealed to Entertainmentwise.com that "She was in a great mood... They had ordered food in and stayed up late talking. She said hanging out with Rob was just like old times."

According to the insiders Robert Pattinson is not serious about Kristen Stewart but loves to catch up with her.

The Life&Style magazine claims that Robert Pattinson doesn't see a future with Kristen at this point in time, but he likes to see her. He's made it clear that they are not exclusive.

Robert Pattinson broke-up with Kristen Stewart following the Rupert Sanders kissing scandal. Since then the "Map to the Star" star has been linked to all kind of women, from Riley Keough to Sean Penn's daughter Dylan Penn.

It was also said that Robert Pattinson is planning to spend Christmas with Dylan Penn and her family. So is R- Patz serious about Dylan or is he just playing around with her?

An insider had told OK! Magazine that Robert Pattinson thinks Dylan Penn is the most beautiful woman he has met. They both are spending nights with each other and are taking things slowly.

It seems that Robert Pattinson is seeing Dylan Penn to get his mind off Kristen Stewart.

What do you think? Let us know your thoughts about Robert Pattinson's love life.