My new boyfriend recently confessed?

that he enjoyed being attached to a dog leesh and barking like a dog.Although i must say i found it a little odd, i went along with it as i love him.Anyway i bought him a dog bowl as he likes to really get into the role and insists on being fed pedigree chum for dinner.Anyway my problem is i have just taken him for his nightly walk(which he demanded he do naked) and he ran onto the neighbours garden and pooped on their garden.I know that technically i should scoop the poop but dont you think he is really pushing the limits of love?I keep telling him he isnt really a dog but he just keeps barking at me and wagging his tail.What shall i do?