Britney Spears Haunted by Justin Timberlake  5/16/05

Britney Spears is still traumatized by her break-up from Justin Timberlake, because she thought they would spend the rest of their lives together

The pop pair split three years ago this month (MAY02) and Spears has since married Kevin Federline, and is expecting his child.

But she is still haunted by the traumatic separation, which was played out for months through the pages of newspapers and celebrity magazines.

She tells gossip site The Scoop, "The most painful thing I have ever experienced was that break-up.

"We were together so long and I had this vision. You think you're going to spend the rest of your life together."

But she maintains she is blissfully happy with Federline, who she describes as, "The sexiest man alive. No one knows the half of what he can do. He's brilliant."