What If You Knack A Girl And She Ask This Question What Will Be Your Reply?

A friend of mind bought up this discussion among people
"I met this girl at a party and after the party she was drunk and she asked to spend the night with me,I said yes she could,At night due to her drunkenness we had sex and when it was morning she asked me this question"
      WHAT ARE WE NOW?
I already knew where she was going
But if you were in my shoes what would have been your response
Please comment let's advise him