The latest buzz about the on-again-off-again couple Robert Pattinson and Kristen Stewart, which has been plagued with infidelity and heartbreak, now has a love triangle of sorts thrown into the mix. Pattinson and Katy Perry have long been good friends, but now according to some media sources, their relationship could be getting in the way of a reunion with Twilight co-star Kristen Stewart.

Celeb Dirty Laundry has reported, "Well, our sources tell us that Rob is indeed playing the field, and is 'dating' both Kristen and Katy. However, our source adds that the nature of Rob's relationship with both women is vastly different...Rob supposedly WANTS to date Katy, but she's not interesting in going out with him - just hooking up with him...Kristen desperately wants to get back together with Rob, but he's not interesting in dating her again."

The July 7th issue of OK! Magazine suggests that Perry was a mess after her breakup with John Mayer and has since been going out meeting many people and keeping herself busy.

There are contrasting reports which suggest that Pattinson is only friends with Perry.

There is also another report from the July 21 issue of Life & Style which states that Pattinson plans to reunite with his Twilight co-star Stewart, but has been warned by Katy Perry who advised him against jumping back into a relationship with her for the moment.