I saw this apartment today at about two o'clock in the morning (in Moscow). The pair, which is indicated by the arrows on the photo, was on the sofa in the kitchen. The guy pestered the girl. The girl languidly fought back. It was like the sexual games of teenagers.
I was surprised by what the girl said. She said that the guy is brother to her (as I understand, she meant, that a guy as a brother to her). She said that they agreed to be friends.
I realized this so, that they agreed to behave in the apartment as friends. It surprised me.
I do not think that I clarified the situation for you.