If you had a regular client who you'd seen a few dozen times at least and who wanted to make a pledge that you were the only woman they cuddled (even though it was absolutely not expected or wanted back) would you think it was weird or a compliment?
If they wanted to have a sort of unofficial ceremony where the client said "I pledge to you that you are my cuddler. I vow that you are the only woman I will seek close physical contact with, pro or otherwise, platonic or otherwise and your cuddles give me complete satisfaction" and the pro cuddler replied "I accept your pledge and your vow and as your cuddler will offer you, though not you alone cuddles and contact it brings"
Would you see it as silly, weird or a compliment that the man wanted to do that?