Sarah Harding has split from her on/off fiance for good after completing her rehab treatment.

The Girls Aloud singer has returned to the UK after spending over a month in a treatment centre in the US to seek help for depression and alcoholism and has decided to call time on her relationship with DJ Tom Crane after deciding she needed a completely fresh start in her life.

A source told the Sunday Mirror newspaper: "She realised she needed to move forwards and not go backwards. She met with Tom and said she had come to the decision things just were never going to work out.

"Sarah wanted to come back and start again without any pressure or major decisions on her shoulders. Tom was gutted but agreed it was probably for the best that they parted ways."

Following her successful stint in rehab, the 29-year-old singer-and-actress has returned home full of "energy and sparkle" and is determined to get her life back on track by having a positive new attitude.

Sarah entered rehab in October just weeks after she initially called off her engagement to Tom, 31, in September.

The pair started dating in June 2007 and were due to tie the knot next summer but ended their romance after a series of arguments about his DJ career and the amount of time they spent apart.

However, they reconciled briefly earlier this month while Sarah was in rehab after Tom flew out to Utah to support her during her treatment.