@eoe,
I think it's the blue eyes...no, seriously I just really like guys in those button-down oxford shirts and especially in white and black. I like them when they have their sleeves rolled up especially. I like them with suit pants tucked in with a belt but with no tie or jacket or with jeans, untucked.
I'm not very big into guys who looked 'dressed' or 'styled' or 'dandified'.
I like a more simple, basic but classic and masculine look.
And if I were a man - that's how I'd dress. I wouldn't put a lot of product in my hair and I wouldn't wear cologne.