TIFU In Bed

So my girlfriend and I were going at it. She gets very into it and in the moment exclaims, "Come inside me!" I reply, "But I'm not wearing a condom, are you sure?" "Yes, yes, yes!!!" So I think to myself, "okay", and I do. She then looks at me, "...erm...did you" "Yeah, why?" "Why would you do that?!" "But you told me too!" "Why would you listen to a 12 year old?!"