My fiance and I were a bit hasty in putting together our wedding party. We're happy with everyone we've asked, but my fiance didn't initially ask a cousin whom he is close with. He feels horrible about it and wants to include him, but I don't have another close friend or family member to add to the bridal party. I know that it's ok to have an uneven wedding party, but we don't know how to send them down the aisle with an uneven number. My fiance is concerned about his cousin having to walk alone. What should we do?