We all have different point of views on this , doesn't mean that we should make others believe what we believe . There is no point telling to her what is right or wrong , I think that she knows that , she's not a kid you know. And also she said that she doesn't want any kind of insulting nessages when she posted her message. And if you don't remember how a 17 yo feels and what are her needs then you must be more than 40 or you just don't want to see the truth. I think at your age you should not be having sex.
Sex is best in the confines of marriage.
Giving yourself to a man who is not your husband can and will leave emotional pain. Your first time should be with your husband. Even if you take precautions to prevent pregnancy and STD's they can still happen. Abstinence is the only way to prevent pregnancy and STD's. I had sex before marriage and I can honestly say that I should have waited for marriage.