Hi Claire,
You wrote " This is one of my biggest hang ups and a source of deep shame for me. I have a hard time believing a man could find me desirable. My Master continually astounds me as he loves large women. "

BELIEVE IT!! You are beautiful! He doesn't just love large women, he loves you and is w/ you! Feel no shame! You are who you are and have someone who loves who you are!

My wife is heavy and says these crazy things! I LOVE HER FOR HER! I LOVE BEING W/ HER!!

So...to answer your question, finally, I prefer a thick girl but appreciate all sizes.
I love the feel of a thick thigh and a plump rump - great to spank!

Take care and keep your head up - you are desired!