Todays thought! Realising i maybe Her cucked slave

It has occured to me that i am Mistress's cuck. Being Her private slave brings me into Her private circle and i am aware that She lives full time with Her boyfriend and partner. He is very much aware of me as Her older private slave, they both being in their 20's. i shop for Her, serve Her, carry out Her tasks and by extension i benefit his life as well as Hers. They, i am sure, have an active sex life and yet i am a caged slave to her, not having any form of vanilla sex or intimaceywith Her or any other woman, surely making me her cucked slave? Would you agree?