Responses
There is no cheating per say. As of right now the Uke hasn't slept with anyone other than the seme.
The uke is a robot who doesn't understand romantic love. And because the seme hasn't directly told him that he loves him. The uke is under the impression that he is teaching the seme about sex. (Because the uke is a caretaker robot designed to teach/raise children until they become adults)
OMG im reading the comments and NOW im scared to read this!. I mean is there cheating_? or seme having sex with another person? or uke having sex with another person?. OMG i dont like that kind of theme. ╥﹏╥