"Hmmm," William agreed noncommittally, selecting a book from the top of the 'charms and health' stack and flipping to the chapter index. He was tempted to point out that the situation might be awkward for Gabe, since he and Pete used to be...whatever they were, but that would intimate William had an interest or an opinion, which he did not.
"There's a chapter on magical STDs," he told Pete instead, examining the topics listed. "Would you find purple genital warts entertaining in lieu of Quidditch broom models?"