There is DEFINITELY a viagra story to be told, especially since House references it several times in the series so far. Given the use of opiates and the pain, it's very likely he'd need some help. In my world it would be a H/W angst-a-pa-looza with the slash glasses firmly in place. Maybe a follow up to "Darkness On The Edge of Town" where they somehow came back from MLC, but the rest of the physical crap started kicking in. So all the glibness we've been getting this season is a cover-up for the fact, yeah, they're together, but House CAN'T get it up and what that's doing to the relationship, especially given Wilson's (apocryphal) sluttish tendancies.