My daughter is a little younger at 12, and we have a very open relationship about these matters so far - she will speak to me about boys she fancies, how she feels about the prospect of a first kiss, etc.
I have told her I believe it would be better to wait till (at least) 16 to become sexually active, because it's my opinion that one is not emotionally ready to deal with the complexity of the emotions sex can bring when one is a young teen.
I have also told her that I would not condemn or judge her if she had sex younger than that, tho I would think it a mistake, and that I would rather she felt able to confide in me than not.
She currently tells me she intends to wait till (at least) 16 to have sex, but that's easy to say as a theoretical concept isn't it - she hasn't even kissed anybody yet! I've told her this as well, that intentions are all very well but it's easy to be led away by one's hormones.....
Because that's what I have been like since I can remember - whatever intentions I have ever had to wait/not have sex for a while, once I start getting intimate with somebody, kissing etc, all my good intentions have gone out the window.....
Over my dead body is my child going to end up feeling shamed/shit about herself because she acts on a natural human instinct a few months before it's deemed legal to do so..... But this may not happen anyway - she may have more restraint than her mom ever did!