I'm into my gfs cuckqueen fantasy because of poor self esteem.
Why do you want to fulfill her fantasy?
I never wanted to be kicked out of my house and I think she saved me from that.
It is great to explore and experiment but you should want to do it, not because you don't have enough self-esteem to tell somebody you don't want to. They would not appreciate forcing somebody to do something they really didn't want to do.
Not true, we only made it happen and she is still the one I love.
It's wonderful you love her and want to make your happy, but don't you think your needs matter too? I believe having a good self image can further improve your relationship! How about talking to her about your feelings and letting her learn about how you feel?