Damn princess mentality has been ruining men for decades. There should be a document signed upon transferral of the diamond.
You want this then initial here, here, here, sign here, initial here and sign here.
"Your honor my client has procured a legal binding document that reads;
the defendant must clean, lose weight and administer atleast 7 times a week, either oral or k-9 style gratification for the plaintiff, or as other wise agreed upon by the parties.
Failure to so, by the defendant, forfeits any rights to property, monies shared by the parties and rights to further advance this relationship.
I rest my case."