The incendiary claims, neatly timed with the 50th anniversary of the Rolling Stones' first gig, have been made by Christopher Andersen, author of Mick: The Wild Life and Mad Genius of Jagger.
Speaking
with friends and family of the seemingly ageless rockers, at least four
of the showmen's glamourous set have recalled stories of the men's
antics. The two had a deep respect for each other, Mike (as Bowie knew
Mick) admiring Bowie's creativity, and Bowie admiring Jagger's
"financial genius" as the frontman of the Rolling Stones, writes
Andersen. ...
The men frequently engaged in threesomes, but had a deeper emotional bond too, said Ava Cherry, a backing singer. She recalls some of their steamier moments together: "Even though I was in bed with them many times, I ended up just watching them have sex."
Bebe Buell, a Playboy model who had daughter Liv Tyler with Aerosmith frontman Steven Tyler, recalls being pursued by Jagger, and went on to sleep with both men. She too claims that bedroom activity was wild and far from monogamous. "I used to get some pretty strange phone calls from Mick and David at three in the morning," she told Andersen, "inviting me to join them in bed with four gorgeous black women ... or four gorgeous black men."
But it was the moment that Bowie's wife Angie caught the two men in bed together that seems to cement the rumours. The blonde, with whom the singer had a son in 1970, Zowie Bowie (now Duncan Jones), says she one day found the men curled up in bed together, asleep. She said she "felt absolutely dead certain that they’d been [having sex]. It was so obvious, in fact, that I never even considered the possibility that they hadn’t been".
The rest is here.