I read his biography about 20 years ago, still one of most entertaining books I've ever read. Don't remember him talking about this stuff, other that his female fans were very rabid. Strangely, was never a fan of his fiction, but the biography is wonderful!
He mentioned it all constantly. He mentioned his habit ribald talk especially often, but mentioned kissing and such quite frequently too. It was a definite theme of the book.
Mind you there are 2 or 3 volumes. It only really started some time after he was married; could be volume II if you only read the first.
