Yeah I'm a member of a few other sites and one that includes Family Creep which this scene is from. I first discovered Darron on Missionary Boys/Family Dick site and there are a few scenes similar to this if you are into them. I am which is why I've been following him for a few years..
As Mike as pointed out, a truly straight guy would never due gay porn even for the money. So some like Charlie or Ethan has to have a bent to do it. We humans are complex and are hard to fit into neat boxes.
According to the Kinsey Scale less that 10 per cent of males are "totally straight" with a small minority "totally gay" and everyone else in between with probably more "bi leaning straight" than "bi leaning gay." Or as Tampa puts it, the difference between a straight college boy and a gay college boy is drinking a six pack!