forgotten yaoi title (teacherxstudent)

I am looking for a yaoi manga that has a teacher student relation ship but there is a time skip and they get married and live together and the younger man becomes a teacher but he has a students who is a delinquent like he was who comes over and plays video games a lot and doesnt understand why he is together with an old man

thanks! i hope someone knows what this one is called its bugging me