Here, the language makes clear that Lev, even at 17, characterizes sex as a very adult activity, and sees himself as not-adult because of his virginity. Meanwhile, despite Kolya's language of conquest, the sex with Sonya appears very much consensual. On one hand, one can take from this that the language Kolya uses is just for show. On the other, one could argue that the show is the point, and it is the “show” that makes Sonya want to sleep with him.