http://www.mangago.zone/read-manga/rutta_to_kodama/mh/c004/4/ ?? probably not this but it's almost the same, sorry if I couldn't help ;A;
Maybe this? Just know this one..
http://www.mangago.zone/read-manga/komatta_yatsu/mrs/manga/komatta-yatsu/v-1/3
Some parts of this matches your description, but I'm not sure if this is it!
http://www.mangago.zone/read-manga/toshigoro_no_otokonoko_to_are/
Not the ones im looking for but they were a nice read ╮(￣▽￣)╭ if you have any more suggestion im all up for it!
kinda vague but ive been looking for a yaoi that had a school life genre and there were two friends who would go to each others houses to watch some adult vids... anyways i remember that one day, one of the guys who likes the other dude helped the other out in getting him of and yeah... not sure if they were childhood friends or not i just know that they were student x student
(๑•ㅂ•)و✧ good luck!