Justin Timberlake's Grandma Spills the Beans Again, Confirms Engagement to Jessica Biel... Both of their camps might stay mum on the subject, but that's when family members come in handy. Justin Timberlake's granny Sadie Bomar confirmed to Gossip Cop that he and on-again, off-again girlfriend of over four years Jessica Biel have taken the leap and gotten engaged. LOOK: Britney Spears Shows Off Her Blingtastic Engagement Ring. "He called me on Christmas Day and told me he's engaged," Bomar tells the website, explaining that J.T. asked her not to discuss the news with anyone "until after the holidays," and also shared that, "the family loves Jessie. She's a very sweet girl." According to People, the joyous moment ''which supposedly included a "custom-designed" ring' happened while they were on their annual vacay in Montana. This isn't the first time Granny Sadie became the media's trusted source. Back in Octo...