I would advise sitting down with your friend and having a heart to heart.
(If you are new here, tune in to what she says often, because she usually is right, BTW.) This isn't just any girl. You approach carefully for the reasons you've laid out. It doesn’t sound like it’s too close for comfort, but trust me, it is.If you ever start falling for your sister’s boyfriend’s brother, STOP YOURSELF.Some forums can only be seen by registered members.After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.The entire point of having a sister or brother is that if (when) you break up with your partner, THEY BREAK UP WITH THEM TOO. Good luck to you if your sibling goes to church with your partner’s family before you do.