Robert Pattinson Threesome, Katy Perry 'Cheating Scandal' Before FKA Twigs Wedding?

Robert Pattinson remains very good friends with 31-year-old pop sensation, Katy Perry. Rumors initially suggested that the 29-year-old British heartthrob was "crushing" on Perry while still dating former "Twilight" sweetheart, Kristen Stewart. But does R-Patz still hold such feelings now that he's engaged to English songstress, FKA Twigs?

As MstarsNews previously reported, the "Life" actor was recently named a Go Campaign ambassador:

"I've eagerly followed the growing impact GO Campaign has had over the years, on so many children and youth, and I love how tangible and transparent it is... They partner with some remarkable grassroots local heroes who are doing fantastic work but who lack the needed resources, and in places where a little bit of money can go a long way. I've been a donor and a supporter, and now I look forward to joining their efforts, so together we can give opportunity to even more kids and young adults across the globe" (via Contact Music).

So to celebrate this honor, Pattinson attended a recent fundraiser in Beverly Hills - with his current fiancee AND the "Dark Horse" beauty. The trio were all-smiles throughout the event:

Obviously this doesn't mean that Pattinson's "hooking up" with Perry (even with his future wife's approval). The "Cosmopolis" actor looked completely happy-in-love while walking the red carpet with his "Two Weeks" muse:

But supposedly Twigs has an inner freaky, wild side. Would she indulge in a sexy threesome with the brunette bombshell to surprise and please her man before their wedding?

Totally ridiculous - but still a rather interesting thought, right? Perry might be open to the idea since divorcing Russell Brand!

Despite nonstop rumors surrounding their "faltering" engagement, Pattinson and Twigs are still very much together. They're rearely seen together in public, but don't they make a cute couple?

RELATED: Robert Pattinson Depressed? FKA Twigs Wedding Tension vs. Kristen Stewart Heartbreak