LADY GAGA admits she can't stop lusting after girls - even when she's with a fella.

Though the Poker Face star has never fallen in love with a woman, she's revealed all about her steamy lesbian past.

So much so, sleeping with women was all she could think about the last time she dated a man.

Speaking to US TV titan BARBARA WALTERS, she said: "I do like women. I've only been in love with men - I've never been in love with a woman.

"That's what (Poker Face) was all about... Why, when I was with my boyfriend, was I fantasising about women?

"I've had sexual relationships with women."

Meanwhile, Lady G has revealed her father cut ties with the outrageous star after he first watched her perform live - and feared she had a screw loose.

She said: "It wasn't so easy for my dad, especially in the beginning.

"We didn't talk for months after the first time he saw me play.

"My mother told me he was afraid I was mentally unstable."