So, there was this fic. I don't remember much but I remember that Harry was with many women.
Also, there was this one scene where Susan and Hermione are teaching Harry how to swim at Hermione's house and as a reward, Susan gives Harry a tit-fuck. Also, they go to the local pool where girls from Hermione's primary school are there and now they are jealous of her. I think the other girls in the 'harem' were Ginny, Tonks, Luna and Narcissa but I am not sure. Does anyone know this story?