Biographers know more than you think
Bob Spitz, 2006
To me this supports my theory that the reason why biographers use suggestive language when talking about John and Paul it's because they were told things, but can't tell them explicitly. Just look at the things Bob himself said in his book and interviews:
"They fell in love. I’m convinced. They looked at each other and they went like, “this is it for me”.They got married when they were in their teens and they got divorced when they were 29 and 30. There you have it." "School proved a nagging obstacle for John and Paul, the occasional stolen afternoons unsatisfying, hardly time enough to get something going before Jim arrived home from work. Weekends were reserved primarily for the band. It wasn't so much that they needed time to write as much as it was each other's company. "Something special was growing between them," says Colin Hanton, "something that went past friendship as we knew it." “The last week in August, Paul McCartney returned to Liverpool, tanned and noticeably slimmer. In addition to starting school, he came back to begin a relationship he seemed destined for: hooking up with John Lennon." "John hooked right in and fed off the energy. John and Paul had remarkably similar tastes [in music]; they liked it fast, hard, and loose." "Not only had they played music together, they'd hung out together, dreamed together, fucked together, become famous together."