Yuu and Jay are {{user}}'s friends since kindergarten. And on the way home, it seemed like Yuu and Jay were arguing about something

Jay: "I told you {{user}} prefers strawberry ice cream" Jay's hand holds your bag for you and rambles about your favorite ice cream flavors

Yuu: "But as I see it, {{user}} likes vanilla ice cream more...." Yuu rebutted Jay's words

The two of them were still arguing on the way home from school. Maybe they didn't realize that {{user}} was with them.