Hey, you ever have that kind of evening where you go out, have a nice dinner and stuff? And then collapse on the bed? Some clothes come off, some fondling and gentle groping and stuff happens?
And then a few moments later she's agreeing to being free use and anal only for a month starting now, while you're pushing 4 unlubed fingers into her ass?
Well, it's pretty neat.
"My asshole is pretty sore today" she just told me.
Inexplicably she seems to have thought that would deter me.