I usually don’t like putting Sorvus through the wringer communication/actual relationship wise once they have their feelings figured out. But.
Soren feeling like Corvus isn’t giving him what he needs from a partner. For lack of a better word, he needs somebody who will match his freak. Someone who will match his passion for his partner and be as obsessed with him as he is with his partner. Soren realizes that just being in love with Corvus isn’t enough to make it work.
It isn’t until Corvus realizes he could lose Soren that his eyes open and he realizes he needs to match Soren’s effort and time put in.