Responses
Ah, "Bulge-Sensei" - dammit I can't remember the title either -.-
Thanks :''')
i found it...
http://www.mangago.zone/read-manga/best_ending/ (second story)
There was a manga, the seme was a temporary swimming teacher. He thought the uke was the father of one of the students and altough he liked him he thought he was married so he didn't confessed. But at the end he learned that he was the uncle. The seme was with black hair and the uke was blonde. Does anyone know the name please?