Mandy MooreMandy Moore has revealed that 2006 was a sad year for her but she doesn’t really know why.

The pop-star-turned-actress told Jane magazine recently that she felt “really low, really sad” for most of last year but couldn’t put her finger on the cause.

“I’m a very positive person, and I’ve always been glass-half-full. So it was like someone flipped a switch in me.”

Mandy, who split from boyfriend of two years Zach Braff in June, added that she’s been writing songs and poems to help her deal with her blues: “Writing has been really therapeutic. These little nuggets that have come up over the past eight months have made me look at things in a different way.”

She is currently rumoured to be dating Adam Goldstein, aka Nicole Richie’s ex DJ AM, after the pair have been spotted out and about together on several occasions recently.