gabolange

Однолюб [od-na-LYOOB] Used to describe a man who only has one love in his life, or who can only love one person at a time. The word comes from combining two parts: одно- (odno-), the combining form of один (odin), meaning “one,” and -люб (-lyub), an abbreviated form of любить (lyubit’), meaning “to love.”

Summary: Margo pulls him down to rest his forehead against hers and they tie their breaths in knots—short, hitched, shared. It’s overwhelming. Almost too much to hold. Sergei’s chest aches with the feeling of it, close enough to weeping that he has to breathe through it, and the thought comes to him, half-formed; she was made for him. But it doesn’t sit quite right—no, it’s closer to the other way around. He was made for her. Every part of him, down to the bone and sinew.

Or; Margo tells Sergei to take her to bed.

— Valya would never be unfaithful to you, he adores you. — You've never even met him.