Okusama wa Alpha
Complete | fuyu natsushita | 2000 released
Idk why you'll saying there is cheating but their aren't, it didn't show that kazumasa was practicing that thing Infront of the councilor.And the mother actually planned it all, there is a camera so that when something happens between her son and councilor, she can stop them.Though I still her for planning something like that so that her son and the uke make love. And actually they love each other though they just couldn't do the thing since they both alpha and maybe because of their pride . Still a good read though
Muri Marriage