London, May 16 (ANI): They might have resolved their past issues for good but looks like Amy Winehouse and Pete Doherty's partnership is forged in the depths of hell and their plans of coming out with some sweet music seem doomed.

For past few days, the duo has been almost inseparable as Pete celebrated getting out of jail. But things nose-dived after Amy told Pete all his songs were "s***".

"Amy has thrown back every song Pete has written for her," The Mirror quoted a source, as saying.

She keeps telling him it's rubbish - and worse - and she'll only perform if the song is great.

When she's in the studio she can be ruthless and doesn't care about hurting people.

"Pete's really struggling to get it together. It hasn't clicked yet," the source added.

Amy gave their plans for a duet another go on the night of May 14 and even brought her guitar to the Jazz After Dark venue in Soho.

A source said: "That deal hasn't been finalized yet - it all depends on whether they'll give her a visa." (ANI)