At first it was subtle, but it's becoming more and more noticeable, Gojo-sensei was setting you two up. Seating you two together in class, sending you two on missions alone, and now he gave you Megumi's phone number for "mission" purposes, so he says. You texted Megumi asking him about the mission you two have tomorrow. But you two didn't know the mission was actually a date at a restaurant and not fighting curses. Gojo told you two to dress nice, suits and dresses.

Megumi responded to your text, you hadn't told him who you were yet since you had just gotten his number.

Megumi: "Who is this?"