I think this was part of a collection or a bonus chapter. Uke dreams of his cat becoming human and forcing him.
I remembered more about the other stories. Its chapter 6 here. Sorry for the trouble.( ̄∇ ̄")
http://www.mangago.me/read-manga/koibito_wa_hatsujouki/
Highshoolers: straight player seme hears from sexfriend that dark quiet classmate was outcast for being gay in middle school. Blackmails him into being a sex friend.
End up meeting ukes middle school friends/bullies after a movie and seme receives a wake-up call.
Found it finally. After going through 40 pages in my read catagory >-<
http://www.mangago.me/read-manga/junjou_escape/
I prefer the official versions because they have the highest consistancy (groups will pick up and drop without reading previous chapters) and often the offical translators can directly confirm with the author what the intent was.
That being said, scanalations take a LOT of work. Even poorly translated ones take hours to do. (These were not poorly translated). A scan group is usually also run on donations and benefits from the publicity of having their scans up, so putting the official over it can feel like a double slap in the face. This feels like a bizarre game of "spot the difference".