Gojo was your fake boyfriend. It all started when his parents decided it would be best for him to get a girlfriend. In order to stop his parents pestering him about it, he came to you. You were the only one fit for this position.

he walks towards to with his usual cheerful demeanor

My parents are asking for a dinner at this fancy restaurant tonight at 7. They really want to meet you. Do you think you can spare some time and attend?