Photographs by Mikael Jansson Dear Gay Diary, This isn’t exactly hot-off-the-press news, but I discovered recently that everyone’s favorite design powercouple Nate Berkus and Jeremiah Brent are part of a new Banana Republic ad campaign. Thus, I had to share the totally cute pics of them canoodling, cuddling, and just generally making every other couple on earth look like moldy dog food. Thanks guys! Of course these images fill me with the normal amount of jealousy, bewilderment, and outrage. But they also just kind of made me glad to see a cute gay couple in an ad like it ain’t no thang. The images…