
Scene brightened from a blu-ray source and I see no evidence of any shaft going in throughout the entire scene.
This is the clearest frame of that scene ... if there was any penetration it would show.
Second scene where they roll around before having sex and supposedly according to that quote from "movienudity" (posted by @
myfamousteen)
was "very real". It shows his fingers holding what looks like the shadow of his erection but I see no evidence of penetration .. you have to use your imagination.