Nothing

You don't feel any different, and after a few minutes of searching, you and Karen give up on finding rubbers and agree not to go all the way. Karen has put her bra back on when you see her again. She asks that you put your shirt and belt back on too, as the two of you just can't go that far tonight without protection. She does drink some more and for about 20 minutes both of you make out. Secretly, you hope to get her drunk enough to fuck her bareback. She is getting hornier as the night goes and has an idea.