Id recommend this but i cant find ithelp pls

Im trying to find this bl where these two delinquents are rivals but then right before a fight one guy needs to uhhhh take a dump and the other rival catches him making a cute face while in the restroom and falls in love with him..i swear i remember it being wholesome n goofy thats why im trying to find it

This has been bugging me for awhile please help