More talking. Yumezora brought up how Gomi always shut down his co-workers attempts to learn more about Yumerzora's love life. I think she also mentioned how both of them have zero ethics and it's like hard-coded into their DNA or something along those line.
After her speech, Yumezora told Gomi that the next time they meet up after work, they're going to fuck. Gomi went straight home, crying on his bed from the emotional rollercoaster and looking up the legality of adultery in Japan.
Next day, Gomi saw Yumezora again at work, trying to act normal. In his head, I think Gomi is trying to justify carrying on with the affair with believing the husband is indeed a shitty person to cause Yumezora to cheat.
And this is assuming the husband actually does exist. We'll see if he actually does...