Spice Girl Mel B has revealed that she was groupmate Geri Halliwell’s lover – for one night anyway.

During an interview with U.K. journalist Piers Morgan for his TV show Mel nodded and smiled when Morgan asked her point-blank if she and Geri had a sexual encounter. An exasperated Mel said:

“She’s going to hate me for this because she’s all posh in her country house and her husband.

When Morgan asked her if their affair continued for a while and if they were in love, Mel responded, “We were best friends…It just happens one time, you talk about it and it doesn’t really happen again.” Mel also threw in the fact that Geri “had great boobs.”

Asked if she had similar encounters with the other Spice Girls, Mel said, “Well, when I got my tongue pierced we all kissed. But that was just a kiss because I wanted to know what it felt like. It was just a silly kiss. Nothing sexual like that.”

The Spice Girls’ reunion tour gets underway this summer in the U.K.