What do Ben Affleck and Matt Damon, Frodo Baggins and Samwise Gamgee, and Sherlock Holmes and Dr John Watson have in common? Each pair shares a close, homosocial relationship – what we in the 21st century call a “bromance”. Perhaps you might identify with them too, having a close male friend who understands you like no other. But the portmanteau word “bromance” infuriates some. Gender…