You should know someone pretty well before spending tons of time alone with him. You know what you're doing and you have to live up to the consequences of your actions. Read The Rules. Girls, don't be witches. Follow the example of men, who aren't nearly as anal as y'all are.
Men tell it like it is.
Life is too short, so being laid back is the way to go. Wait until marriage to be truly intimate with someone. You'll avoid much heartache and much drama if you take the extraneous physical stuff out of the equation. Decent women will think it is so hot that you have some morals. It is so romantic to wait until marriage.