Do girls really like doing this to their bf's?

My girlfriend always ties me up on my back and makes me eat marsh mellows out of her butt. She also makes me walk around in a diaper and even requests that i have accidents so she can change me. She also has made me dress up as an old lady and she'll break in to our house in the middle of the night dressed as a burglar and tie me up and put household objects in my butt and if i dont let her she hits me really hard.