I remembered this:
http://www.mangago.me/read-manga/aishuu/
I remembered another cheating seme.Not exactly cheating, he introduces the girl he'll be marrying, to the uke.Have you read this:
http://www.mangago.me/read-manga/scarlet/
This is one manga with cheating uke and the seme gets angry.It's good:
http://www.mangago.me/read-manga/ubawareru_koto_marugoto_zenbu/
A Cheating seme and the uke gives him a revenge !! And the seme begs for forgiveness