I also thought that the reason he sleeps in the living room was because he is sick. But I also noticed one detail on the second morning when he got up: His clothes, such as his underware, and T-shirts are in a bag in the corner of the living room. If the "sickness" would have been the reason, at least, he would have stow this clothes in the bedroom.
So either he is NOT Egor and the real Egor will show up later or, he is EGOR and we have roommates, not a couple. Similar to Nora and Rita and now, Jenny