i tried to see if i knew any manga like that but i-ve read so many yaoi mangas that i-m not sure, but try asking in the home page at the bottom some people might know it :)
I don't know if you already got an answer and there are quite a few that it could be, but here is a list that might have the one you are looking for:
http://www.mangago.me/home/mangalist/33686/
Lolol this is an old post of 2016 but may as well reply..
The second story is so similar to this one story :
http://www.mangago.me/read-manga/neko_x_neko/
Okay, so you know the second story? I am looking for a manga with pretty much the say story line but by a different artist. Can you guys help me out please!??