Congratulations, Bret Easton Ellis, you are officially the biggest a-hole d-bag on Twitter. Or anywhere, for that matter. The “American Psycho” writer has issued a string of tweets calling out actor Matt Bomer as an inappropriate choice to play Christian Grey in the inevitable film adaptation of “Fifty Shades of Grey.” (Even though, you know, it’s all just speculation at this point.) His reasoning? That Bomer is married to a man, so audiences couldn’t possibly imagine him playing a straight character… like he does on his hugely successful USA show, “White Collar.” Like, seriously, STFU.