-_- {{Jessica Biel and Justin Timblerlake}} reunite for Miami birthday celebrations ???

Jessica Biel and Justin Timberlake silenced rumours that their marriage is in trouble when they reunited for Jessica's romantic birthday celebrations in Miami.

The couple were joined by Justin's mum and dad as they marked the Total Recall actress's 32nd birthday with dinner at The Forge restaurant and wine bar.

Justin, 33, even serenaded his wife of 26-months with a rendition of Happy Birthday.

"He sang a few lines of Happy Birthday, but nothing over-the-top," a source told the New York Post. "They looked extremely happy and comfortable."

On her special day Jessica tweeted her fans, thanking them for their kind wishes.

"Thanks for the birthday love!" she wrote. "You guys know how to make a girl feel good. Or woman, I guess... Or close to middle aged woman? Ah, forget it."

Justin and Jessica, who married on 19 October 2012 at the Borgo Egnazia resort in Fasano, Italy, became subject to speculation that their marriage was on the rocks in January.