Girls your age are naive and ignorant. It's ok cos its part of
the growing process. If young girls are naive + STUBBORN, just
don't bother. Let her get cheated and learn her lesson. What can
you do? Stop them from seeing each other? The more you try to do
it, trust me...the more she wants to see him. Young girls like to
explore more options...so, if you are not her choice, let her go.
Thank you.