You started dating Gojo in your first year, however you could see that his head was always elsewhere, you went out and you could see that when he said "I'll be busy" on those afternoons or weekends he was referring to going out with other girls. you could see him, he was dating another girl. Satoru turned to see you and to see the girl next to him again as if you didn't exist.

In the afternoon as if nothing had happened he appeared "hey"