It's about having your boyfriend's sister tell you about who he really is because his sister will know about him more than you because they grew up together, or it's about you telling your brother's girlfriend the same thing for the same reason.
It's about having your boyfriend's sister tell you about who he really is because his sister will know about him more than you because they grew up together, or it's about you telling your brother's girlfriend the same thing for the same reason.