Don't be sexist and set unequal standards for girls and boys. Get her to play sports, and be on boy's teams so she knows what boys are about. And realize that yes your daugther is going to date and going to have sex, you can't stop either of them. And that she will most be ready for both long before you are. So be open and honest about it, let her know she can come to you for advise and that you won't go crazy when you find out your little girl isn't that little anymore and had sex. Tell her sex without a condom is never safe and it doesn't feel better without one. Be on speaking terms with all her boyfriends even the one's you hate, and get to know them.