Robert Pattinson New Girlfriend Tamra Natisin? Kristen Stewart's Ex 'Flirts' with Katy Perry's Lesbian Assistant, NOT Dating? [PHOTOS]

"Twlight" heartthrob Robert Pattinson recently admitted that he still "keeps in touch" with on-and-off again girlfriend, Kristen Stewart. But that doesn't mean that they're officially back together, so R-Patz still has the right to enjoy the single life...

And he definitely appears to be a huge ladies man!

As Mstars previously reported, the 28-year-old British actor was recently spotted cuddling with a cute brunette at a Katy Perry concert in London:

The "Maps To The Stars" hottie was spotted with yet another mystery girl at Perry's Prismatic Tour gig - and the two appeared to be more than just close friends!

Several fans snapped photos of R-Patz throughout the evening, and he looked completely mesmerized with the "Dark Horse" songstress' performance. Of course, this led some to believe that he was secretly "romancing" John Mayer's ex...

Apparently not!

In one (rather blurry) video posted on Instagram, Pattinson has his arm casually drapped around another girl.

(ROBsessed)

Do fans think Pattinson is finally ready to jump back into the dating pool, or is this just another short fling?

Well, sources now confirm with CelebDirtyLaundry.com that this lucky gal's name is Tamra Natisin - Perry's good pal and personal assitant. She's a lesbian and allegedly already in a committed relationship (with another woman).

Natisin and Pattinson are supposedly just close friends.

(Instagram)

In fact, rumors once suggested that Natisin had a brief romance with K-Stew!

Oh, the drama.

Well, that basically confirms that R-Patz and Natisin aren't dating. So, is a Robsten reunion still possible?