I was really invested in the story. The Psy and changeling lore was really interesting and the philosophical questions on the importance of emotions were fascinating. 
But the relationships between the characters? Mhm. Difficult. It is made quite clear again and again that all characters in romantic relationships consent to the behaviour that their partners, specifically their changeling partners, portray. Yet consent is quite frankly a slippery slope in this book. A lot of the phrasing of thoughts, wants, wishes, etc. from the male mc are very worrying. And while the female mc's thoughts voice consent, some of it is given because she knows he needs it. Which is..a little uncomfortable.
I still had fun following the plot but you can bet that I wanted to punsh several characters multiple times.