“Before you get into bed with someone, be sure that you have a clear idea of what the sex will mean for your relationship with that person. Is this going to be a one-time hookup? Is this a casual, but potentially ongoing thing? Is this the start of an LTR? Does sleeping together automatically mean you are no longer seeing other people, or are you both comfortable with making that decision based on some other measure of seriousness? How serious is sex to the two of you? There are no fundamentally "wrong" answers to these questions—but what is wrong is not making sure that both people have a clear understanding of the answers before you get each other in a vulnerable position.”