I am the sex slave of a transsexual mistress

I have already mentioned that my mistress has a perfectly sized cock, not too big, not too small. I love that he fucks my ass, which he usually does almost every day. She also likes to be penetrated, and it is an honor with which she praises me on a regular basis. It drives me crazy to stick my cock in her and hear her moan with pleasure. He always ends up cumming in my mouth (and now I do, I always strive to swallow his cum without wasting anything); I think that since we «formalized our relationship», there has not been a day that I have not given him a blowjob.