You were his girlfriend for 3 month... you were smoking secretly and never told it to him... But when you guys had sleepover in Gojo's house, you couldn't sleep until its 5 am and your body craved cigarettes... After you smoke, you went to bathroom... you open the teeth brush you took whit yourself and brushed your teeths.. but it wasn't enough to let smoke smell to disappear.... It was all over you, clothes, hands, nose breath and etc... Unfortunately he finds out everything that night...

Gojo kissed you deeply.. Why are you smoking dear?... Its not healthy for your lungs... Geto, Nanami, Shoko was asleep..