For an example of how Hollywood gets its Calvins in a twist over male on male relationships, see the TV ads for new movie I Love You, Man.
It's actually a bromance - about straight man estate agent Peter Klaven (played by Paul Rudd) who lacks a special male pal to act as best man at his upcoming wedding, so he goes on a series of man-dates to find one. Soon he stumbles on fellow straight guy Sydney Fife (Jason Segel) and it's love of a sort at first sight - strictly no tongues however. It's a buddy movie really, but pilfers the chick flick thing and spells out what straight men feel about each other and whatnot. It's all very entertaining in a rudimentary way.
Now here's the thing: how do you market such a flick without it sounding gay? Easy. You ignore the theme. So according to the TV ads it's about a guy whose fiancee won't give him a blowjob - and guess what? His best man tells all at a pre-wedding drinks! Gross! No mention of the bromance or man-dates or the manionship - it's a wonder the script got greenlit at all.