Federline was formerly a backing dancer for Timberlake, and the pair has started spending time together again.
The aspiring rapper was invited to Timberlake's pre-Grammy Award party in Hollywood on Feb. 9, where they were photographed hugging on the red carpet.
According to Us Weekly magazine, Federline initially didn't see his former boss emerging from the venue behind him.
A source explains, "Justin walked right up and they man-hugged. It was clear they liked each other."
The two also bonded at a Super Bowl party in Miami on Feb. 4 at a luxury suite at Dolphins Stadium.
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