When? Im so lost rn
No he did not, I’m pretty sure Zhenya just slamed his body on the old man to make the old man think he might do something. Zhenya did this to see if he will protest or not
Based on the novel, he wanted to see if another man could turn him on, since he was always just attracted to women he thought something was "wrong" with him when he suddenly was turned on by a man. That's also why he smelled the man (Zhenya is obsessed with the way Taek Joo smells) and when he realized other men don't do it for him, he retreated.
Did he just fuck a random old man