A good girl is faithful. Youll never have to worry about her sexting other guys or being interested in anyone else. As long as you treat her with respect and with love, she wont even want to be with anyone else. You can always trust her 100% as she trusts you 100%.

What does being a good girl mean?

Theres a good girl!: You are behaving well! You are being obedient or well-behaved!