Justin Timberlake and Jessica Biel: Together again?

Justin Timberlake and Jessica Biel -- who split in March after a four-year relationship -- may not be done done yet. According to Us Weekly, the couple has been "quietly" rekindling their romance.

"They have been talking the whole time and decided to give it another shot," an unnamed source tells Us. "Jessica really wanted to get back together with him and Justin realized single life is not what it's cracked up to be."

So single life -- aka being linked with "Friends with Benefits" co-star Mila Kunis, Olivia Wilde and Ashley Olsen -- just wasn't cutting it for JT? We feel his pain.

A suggestion for getting back in Jessica's good graces: Give her a gift she won't forget...