Franco, 34, put an end to rumors Wednesday that he's dating his Spring Breakers costar, Benson, 22.
In a new blog post for Huffington Post, the Oscar-nominated actor denied he's in a romantic relationship with Benson -- and, for good measure, declares he's not dating Robert Pattinson and Justin Bieber's ladies either.
In September, rumors swirled that Franco was flirting with Stewart, 22, at the Toronto International Film Festival. But Franco denied the claims, writing, "I wish I had actually gotten closer than the 13th row of the theater in Toronto where Kristen gave her On the Road Q and A, but I didn't; not only did I not talk to her, I didn't even go to [the club] where I supposedly asked her out on a date."
"As for Gomez and Benson, those are [Justin's] Bieber's girls and I wouldn't dare tangle with the Biebs," he added about his Spring Breakers costars Benson and Gomez, 20. "I heard he wants to kick my ass. Yikes!"
Regardless, Franco and Benson were on a friendly outing Oct. 15 -- visiting Halloween Horror Nights at Universal Studios Hollywood together. A source told Us Weekly the pair was "holding onto one another" while going through the "Walking Dead: Dead Inside" and "Texas Chainsaw Massacre: The Saw is the Law" haunted mazes.
Benson was last reported to be dating Justin Bieber's "swagger coach" Ryan Good. Franco split from his girlfriend Ahna O'Reilly in July 2011 after give years of dating.