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Jaden Smith, the actor and son of Will and Jada Pinkett- Smith, is being linked to reality star Kylie Jenner, daughter of Bruce and Kris Jenner. A source told US Weekly that the two 14-year-olds are dating and that "it's new, but they've been friends forever."

A representative for Jenner's PR did not immediately respond for comment.

The duo was spotted in London at the Caffe Nero on Sunday, March 3. Smith was in town to celebrate his friend Justin Bieber's birthday.

E! reported that his age was the reason he could not get into Bieber's party in the Cirque du Soir club. Justin Bieber tweeted that he had the "worst birthday," causing many to wonder if Smith had anything to do with Bieber's bad night.

RELATED: Justin Bieber Has His 'Worst Birthday'

Smith talked about his night out with Bieber, tweeting, "I gave Justin his Cartier then went home," but did not talk about time spent with Jenner on the social media site. All Jenner tweeted was, "Bye London, I'll miss you."

To read the Us Weekly Exclusive see: Kylie Jenner Is Dating Jaden Smith.