Aikawa used the 愛 word!! Whatisit lately with authors upping the impact of their characters’ love confessions using 愛してる?
Also, I feel slightly better about the very first time they had sex (when Nanao essentially rapes Kuon because Kuon clearly seems to not want it verbally) since Kuon has this whole internal monologue bit where he admits that his obsession with Nanao started the moment they met, evolving into a dark jealousy of others touching Nanao that manifested as an indifference/hatred for Nanao initially.
Messed-up boys are such interesting characters…!
I am kind of crazy disappointed though in that there was no on-page sex this chapter :| wtf man. Just some light making out, Nanao begging Kuon to do him, and then segue into the next scene.