Kelly Clarkson says shes so happy in her relationship that its ruining my creativity

Kelly Clarkson has found love with talent manager Brandon Blackstock. As Clarkson, 30, has found out, however, her happy relationship is making it hard to pen her signature tough girl power anthems like Since U Been Gone and Stronger.

"I'm too happy! He's ruining my creativity!" Clarkson joked about her new relationship at an event promoting Duets, according to Us Weekly. "I'm writing all this happy sh--! It's killing me.I try to write a tough song and it comes out like butterflies and rainbows. People are going to be like, 'What the hell happened to you?'

The Dark Side singer isnt complaining too much, though.

It's difficult, but awesome! It's an awesome problem to have, she said.

Clarkson has been dating Brandon Blackstock, 35, since late last year. He is the son of her manager, Narvel Blackstock, and the stepson of Reba McEntire.

"People used to ask, 'Why are you single?' and I'd say, 'It is not in my schedule,' " Clarkson said, according to People. "I'm in a relationship right now and I have time for it. I never used to. I'm so happy now.