The Girls Aloud singer has been in a relationship with Triple 8 singer Justin Scott for six years and although she admits they think about tying the knot, she doesn`t feel under any pressure to wed.
When quizzed on wedding plans, she said: "It is headed that way, but to be honest we feel quite young still. There`s this pressure all the time to do the next thing - get engaged, get married, have a baby. It`s just because the media want something new to say, but now I feel like if we announce it, everyone will just be like, `Oh, right, yeah, what took you so long?` "
Although they are unsure when they will make the final commitment to one another, Kimberley insists she and Justin are happier than ever.
The 28-year-old pop star`s mother Diane Walsh thinks she knows the secret to the couple`s blissful relationship.
Kimberley said in an interview with the June issue of Britain`s Cosmopolitan magazine: "My mum once said, `He`s got a very gentle nature, hasn`t he?` And she`s right, he has. He`s very supportive and is a good person. He`s been well brought up, he`s got good values. He had a little girl when he was very young and took on all the responsibility of that, which I think has made him what he`s like now."
Kimberley helps Justin raise his daughter, but insists she is more of a "friend" than a stepmother to her.
She explained: "His daughter has her mum and dad and I don`t want to intrude, so I`m like a cousin, or a friend. It must weird for her - she gets bugged about getting stuff signed, but she doesn`t seem that bothered by it. In fact, I don-t think she`s that interested."