Robert Pattinson is pondering whether to get romantically involved with Sia Furler or not.

The Twilight star and Kristen Stewarts's ex-boyfriend have been seen hanging out with singer Sia, 37 for quite a few times in a day. He attended Jay-Z and Justin Timberlake show with Furler and even took her out for drinks at LA's Soho House. But as per the reports, Rob Pat is not in love with the Aussie singer. The question is, why is he spending time with her? Is it to get over Stewart?

A source told E!News, that Robert Pattinson and Sia Furler are just having good time and there are not smitten by each other. Along with Furler, Pattinson was joined by three other friends at the Soho House on July 30th and the witness revealed that there was nothing else except some interesting tête-à-tête.

Pattinson was seen in a red flannel jacket and a hat while Sia was in a white ensemble. The source told E! News, though Rob took a seat beside Sia, they were just absorbed in the parley like rest of the friends.

"There were no signs of mush between the two", the witness told E!News.

Apparently the grapevine is that Sia is bisexual. This would have definitely appeased Kristen Stewart and would have given her more reasons to make Robsten work again.

Don't Miss, K-Stew was seen yesterday flashing out her bra, making Rob Patt jealous.

On the 28 July, Sia was seen bra less in a sheer top with Pattinson. They were both leaving Rose Bowl after watching Jay Z and Justin show. When Rob was seen with Sia (who had her breasts in full spectacle) it sparked rumors of their affair but it seems they are just good friends.

What do you think IBTimers'? Are they just good pals or in a full throttle relationship behind a veil?