Times have changed, and so have the rules. Modern grownups need a sex-positive guide to communicating digitally with their lover, and sex guru Tina Horn is here to help you with you swipe right, sext like a pro, and take superb selfies.How frequently should you text a friend with benefits? When is it okay to send someone a nude pic? Modern sex is full of confusing questions that Dear Abby never had to deal with. But don't lose hope if you're feeling confused about erotic etiquette: the Sex Rules series is here to answer all the little questions about how to handle sexual situations-even the ones you didn't know you had.Sexting covers all types of digital flirting. Sexy texts require timing and style, while erotic pictures and steamy selfies may reqiure caution about the cloud. White-hot videos can take you from FaceTime to Oh-FaceTime if you know what you're doing.Learn the dos and don's for when, how, and what to include in a great sexting session and turn your phone...