In the same way that she wants to be friends with your friends, she really wants you to be friends with her friends. Trust us, most women don't bring just anyone into the inner circle. You have to be really special to get an invite to the more intimate events. So, if you love her, jump on the opportunity, because it's a telltale sign that she's very much in love with you, too.
When we say she wants you to be friends with her friends, we mean in that nice way where all of her friends think you're amazing and the best boyfriend ever. We don't mean that you start texting the gang without her knowledge or become such good friends that you start hanging out without her. She wants you in the circle, but not that far in!