Responses
for 3 person bringing them together
http://www.mangago.zone/home/mangalist/290547/
for kid bringing them together
http://www.mangago.zone/home/mangalist/290519/
you mentioned "child", so I'm gonna recommend you this (IT"S NOT YAOI SORRY) it's shojo but worth the read : Bambi to dhole
I’m looking for something sweet and also smutty if possible. I want there to be like a third person bringing the relationship together. Not by being an antagonist, but by actually trying to bring them together. Maybe one of them has a child and the child brings them together or something. Another plot could be that we have a fujoshi bringing them together.