If you decide to orgasm while still in your girlfriend, you need to make sure you pull out before you start to go soft. And you should make sure you hold on to the condom as you pull out so it doesn't slip off or spill. If you intend to cuddle with your girlfriend after, I would suggest you throw away the condom and quickly wash off before you do so just to make sure no semen is left behind on your penis in case it could get near her vaginal opening. Just a few safer sex tips that you should employ EVERY time you have sex...