@ALittleTeawithmilk just for you I have looked at all the passages that the index says mentions Serena Williams. Nowhere does Bower claim they were not friends. One of his sources, Serena’s ex of 2 years, claims he never heard Serena mention M. Then there is the Vanity Fair journalist who researched and wrote the “Wild About Harry” piece who was told by Serena that they were not friends, but acquaintances:
She gave him an enigmatic quote: “You’ve got to be who you are, Meghan. You can’t hide”
Bower relays (but does not give his opinion on) this in a chapter about that interview, what preceded the article and what happens afterwards. Every other mention of Serena by Bower is either innocuous (eg M going to watch her at Wimbledon) or indicates a friendship (and he includes a reference to her appearing on the podcast).