Melanie B has vowed she will be faithful to husband Steve Belafonte because he can keep up with her, sexually speaking:

‘I know I’ll always be faithful to Stephen because I’ve never met anyone before him sexually who is on par with me,’ says Mel.

‘They start off on a par and then they can’t keep up but with him it’s perfect.

‘Actually I have never met anybody with a higher sex drive than me ever in my entire life!’ 

Hear that Eddie Murphy??  Ha ha ha

Photo:  WENN.com