Even though Kristen Stewart and Robert Pattinson haven't been together for a good while, it turns out that Pattinson might not be attracted to his ex for one particular reason.

FKA Twigs Is Robert Pattinson's 'Forever Soulmate?'

On Tuesday, Hollywood Life reported that the Twilight actor doesn't find Stewart sexy anymore mainly because of her short hair.

"Rob always preferred Kristen's hair on the long side, so he's not too impressed with her new short do," a source said. "It's just not that sexy to him."

Are Robert Pattinson & FKA Twigs Engaged?

The actor's new girlfriend FKA Twigs, however, has long hair, which Pattinson apparently likes because it "really embraces her femininity, which is a real turn-on for Rob."

While a number of Hollywood sites tend to stretch the truth about Stewart and Pattinson, there's a possibility that this news might be made up based on how Gossip Cop responded to this.

"But let's be clear: This is not Pattinson trashing Stewart- it's HollywoodLife," the site wrote. "HollywoodLife is desperate for drama between the former couple, even tweeting, 'Is Robert Pattinson attracted to FKA Twigs more than Kristen Stewart?!' That kind of blatant sensationalism is why the site is resorting to making up a story about Stewart's hairstyle."

In an interview with Loaded posted on Jezebel, Stewart revealed that it can be lonely as an actor.

"Actors become so isolated," she said. "It's like people aren't allowed to talk to us. Like if you're a big star, or whatever, if you're like a famous person, it's kind of lonely. Like people don't want to talk to you."

Tags: Kristen Stewart Robert Pattinson FKA Twigs