I do not think mainstream society has a response of "Aww, how cute" regarding two people of the same sex together. I'm not saying people think gays are evil or anything like that, but mainstream America is a pretty conservative country, look at what happened when Janet Jackson revealed her breast on TV for a few seconds or so. BIG MISTAKE. Then when there was an issue of some baby magazine, and on the cover they put a picture of a baby sucking a mother's breast. Again, BIG MISTAKE. A picture of two gays, outside of San Francisco or California overall, I think most people would just see it as someone trying to ram homosexuality down their throat, even if they have no problem with them (that's how I would interpret it).
As for media bias, IMO just look at how the mainstream media treated Barack Obama versus Sarah Palin and you pretty much have a basis.
I saw an interesting segment earlier on O'Reilly where he said much of the mainstream media consider Fox News to be veeery far to the right, and as such, see it as their job to be the leftwing counter to what they see as the extreme right-wing Fox News.
Of Fox News itself, I think the hard news aspect is center to center-right, and the infotainers, like Glenn Beck, Hannity, and O'Reilly (the first two in particular!), are very far to the right.