Pixie Lott could never have an open relationship.

The 'Kiss The Stars' singer is currently dating model Oliver Cheshire and she says being faithful to each other is very important to her and insists the romance would be over as soon as one of them wanted to be with someone else.

She said: ''It's 100 per cent important to be faithful. I don't believe in open relationships If you want to be with someone else, you shouldn't be in a relationship in the first place.''

Pixie has been dating Oliver for two years and says she's very happy with him, although has no plans to move in with him in the near future.

She said: ''It's the longest and most serious relationship I've ever had. We're happy with how it's going.

''We've decided not to move in together. But he usually stays at mine anyway. If he lived on the other side of London, I'd hardly see him because of work. But he might be moving to the other side of London! He lives with his best friend, who's moving there. We'll have to wait to see what happens.

''I guess our romance will be tested when he moves, but I'm sure we'll be able to cope.''