From Chaos Men:
Dunham seems pretty down the center on the sexuality meter, though I think he leans a bit towards the straight side, as that is the type of porn he requested to watch for his solo and Serviced video.
But having said that, this is one of the few videos where the guy is not constantly checking out the TV to keep himself going. Dunham is actually THERE in the moment. So who knows?
I think he has a dominate side to him and seems happy to have anyone suck his dick, guy or girl.