i know i put it in my reading list

i cant find it for some reason, and ive forgotten the name, so if anyone knows it pls lmk (this is a yaoi)

mc is a blondie noble, ml is mcs slave(hes a dragon too im pretty sure). they have freaky deaky sex, and ml wants to get mc to admit he loves the ml before a certain day, because after that certain day, he'll go crazy or something and eat the mc. last i remember was some freaky deaky sex between them where the ml puts mcs dick inside his urethra....and after....if you know the story, you can probably guess whats next..