I haven't found the one I'm talking about yet. But here's a link to a site with scans from the shoot he did for US Vogue (it's jakegyllenhaalfan.com, so you may well already have it). But if you look at number 5 and 8, where he's with a horse instead of a girl, there are some gay porn elements: the scowl, the black clothes, the shiny paramilitary boots instead of rustic cowboy boots. I recall thinking, usually if a photo like that were done to appeal to women, he'd have a friendlier expression, and more soft fabrics, eg, weathered chambray/denim, worn suede/distressed leather. As it is, the look comes off more ad-for-a-gay-leather-club than romantic dashing horseman (not that I'm complaining ;-).

http://www.jakegyllenhaalfan.com/gallery/categories.php?cat_id=140