Sarah Harding is "cynical" when it comes to marriage and romance.
The Girls Aloud beauty - whose parents split when she was 14 years old - has been in a relationship with DJ Tom Crane for three years but is still unsure whether he is her soulmate.
She said: "I've thought I'd met The One previously. But as you grow up, you get to know who is a good partner for you.
"Tommy could be my soulmate. I think time is a great test. I've learnt over the years not to think that straight away because you're in the honeymoon period.
"I used to become infatuated with people, but it would end before the honeymoon period was over and I'd be left devastated. Now I'm a bit cynical when it comes to relationships and marriage, probably because of my own family history. When the time's right I think we'll know."
The 28-year-old singer doesn't plan to get married until she's in her 30s, because she's busy focussing on her career right now.
She said: "Maybe I haven't got the same strong values as Tom when it comes to marriage. I just think when the time's right we'll know. When would I fit in a wedding when I'm working al the time?
"My mum got married quite young, and I think I'd like to wait until I'm in my 30s. Your 20s are about sorting out your career."