What is the standard duration of sex?

The time is not permitted it is pleasure first, making sure that her breast satisfied you, and both of you ravage each other, making sure that you each reach a climax....., making sure that MOST importantly she is SATISFIED and not just you, always remember that men are turned on by sight (EYES) women takes longer...

Make sure that it is both what you want and reaching that limit of esticy, that when you both are finish you cant wait to go again, so in other Words as i have said time is no limit...