"What is 'anal obsession'?"

I end up saying as I cannot come up with anything better to say.

Millie looks at me for a while, then says:

"It basically means you are obsessed with fucking women in the ass."

"Not sure I understand." I answer.

"Well, basically Patti told me that it was not your fault that you fucked her in the ass. If someone that suffers from anal obsession sees a woman's asshole, he cannot control himself and just sticks his dick in her ass."

"Did she tell you anything else?" I ask.

"Yes, she told me to be sure you don't see my asshole." Millie says, taking her wine glass. She takes a sip from it, then looks at me over the rim of the glass, saying:

"That is, unless I want you to fuck me in the ass."