Responses
http://www.mangago.zone/read-manga/star_like_words/
http://www.mangago.zone/read-manga/puchitto_hajiketa/
http://www.mangago.zone/read-manga/twinkle/
http://www.mangago.zone/read-manga/gosan_no_heart/
http://www.mangago.zone/read-manga/under_grand_hotel/
Each of the couples are open with their relationship. I also know some where they're not trying to be open, but people close to them know if that counts as "heaps".
I love all of these. The 5th does have rape though and it's not as lovey dovey as the other 4.
does anyone know of any yaoi manga when heaps of people know about their relationship