Take action:
Make sure that you never have sex without a condom; have yourself and your long-term partner tested for HIV; remember that cheating on your partner puts both of you at risk, so don't do it; alert any of your previous partners if you contract an STI; remember that unwanted pregnancies can cause a lot of trouble, so don't forget the contraception.
Get your sex life on a safe footing
You had had one too many, and your eyes met across a crowded room. Next thing she was asking you what you wanted for breakfast. But, there are things you should never forget, not even in the heat of the moment.