Whitney Houston's Best Friend Robyn Crawford Opens Up On Love Affair – TMZ, Tmz.com

Whitney Houston‘s longtime pal,Robyn Crawford, is now saying what everyone in Whitney’s world knew … she had a physical relationship with the singer.

Robyn – who made the revelation in her new book, “A Song for You: My Life with Whitney Houston” – says she met a then 16 – year-old Houston in 1980 at a summer camp, and that their friendship quickly turned physical and romantic.

Robyn told NBC News in a new interview … it started with a kiss, and then eventually went on to sleeping together. Robyn says it wasn’t planned – it’s just something that happened.

Over the next 2 years … Robyn explains Whitney told her they had to stop seeing each other, as she felt it would sink her music career. On top of that, Robyn says there was family pressure.

Here’s what’s crazy … Robyn says Whitney wanted to keep things on the down-low, yet people we’ve spoken with who were close to the singer say she often flaunted her relationship with Robyn in public. One source says he saw them at the Crillon Hotel in Paris, and they were full-on making out in the lobby, with numerous people watching.

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Whitney marriedBobby Brownand had one child with him –Bobbi Kristina Brown. Whitneydied in 2012, andher daughter passeda few years later. As you know, they both eerily diedin a bathtubanddrugs were involved.

With her book, Robyn says she hopes to shed more light on who Whitney truly was. It comes out on November 12.