It has never been my intention to make you feel left out, dear sister. However, I am glad you're on board with this because I wouldn't do this if you weren't because I love you and you're more important to me than any relationship I'll ever have.
His birthday is this month as well so we're going to go out together on the 10th and celebrate both. You and the boys have me for my birthday for whatever plans you three have thought up.