Justin Timberlake appeared to send a message to Cameron Diaz on the The Ellen Degeneres Show on Monday. Ellen pressed him on the rumors that he and Diaz are engaged. Timberlake toyed with the audience in his response.

After the performance, DeGeneres brought up “the rumor that you and Cameron are engaged.”

Sinking into his chair, Timberlake asked how she could put him on the spot in front of the 10,000 people in the crowd. “The only reason I need to know,” DeGeneres said, “(is) I need to know, should I get a bridesmaid dress now or not?”

“Know what?” Timberlake said. “Go ahead and reserve one.”

As the crowd burst into cheers, DeGeneres asked when she’d get to wear it. “I’ve got a busy schedule,” she said.

“The only thing is,” Timberlake said, “you’ll have to stay the same size for the next 15 years.”

Ouch! Perhaps it is an innocent answer, but knowing women, it had to be a painful poison to Cameron’s heart to hear it on national TV.

Nevermind the fact that Diaz will be pushing 50 years old in 15 years.