It's not like I have ever tried. I have made a few males over the years, but they all come out, wrong. And not just socially awkward. All Space Marines are kind of awkward socailly, when outside their chapter. And shying away from social encounters, even within his own chapter, would be Heretical, as he is clearly hiding something and must be turned over to the Ordo Hereticus for interogation (depending on the chapter, at least. Smurfs would pull that shit in a heart-beat. Space Wolves, are a lot tigher knit)