My Boyfriend wants me to Cuckold him?

So I have put up with a lot of my boyfriends strange requests and enjoy them, like farting on his face, me being his mistress, letting him wear my dirty underwear.... He asked me to cuckold him recently, so I bought him a chastity device and locked it on, he really kept asking me to have with another guy, and then requested he goes down on me after, so I did it, and he loves it and says he never wants to be allowed with me again, just to clean up after other guys?