Responses
Im not sure, is it this one?
http://www.mangago.zone/read-manga/kawaii_hito_cute/
I think your descriptions told much about Kawaii Hito.
http://www.mangago.zone/read-manga/sairuiu/bt/c003/1.html/pg-1/ . Someone awesome found it for me!!!!!!!!!! XD
It was a shounen ai where this guy is dating this guy who's already married probably has kids too. One day, the guy sees him with his wife, laughing and he's like reading a comic. He's sad and they meet up. The married bf starts to say something and the mc knows he's going to break up with him so he shouts "NO!" at the same time the bf says "Can we live together?" And the bf was actually divorcing his wife.