can u be a little more accurate?there is a scene like that in almost every yaoi manga :/ ^^
i think that they are also childhood friends and they live together
i dont have smth in mind but u should check in here: http://www.mangago.me/tag/roomates/
or in here: http://www.mangago.me/home/mangalist/90616/
window beyond window?
be a bit more specific hun, almost yaoi mangas have that kinda scene~
it was this haha sorry for bothering you http://www.mangago.me/read-manga/tomodachi_ijou_no_koto_shitai/
this is a yaoi and i barely remember but it has a scene where he touches himself and says the other man name at the same time and the other men sees it