One wins, the other loses
Weddings aren’t just an emotional rollercoaster for the bride and her family, there’s someone on the groom’s side who also feels pretty sad on the big day. After all, he is the groom’s best friend and best man, and will be losing his friend to the love of his life, and along with it, all the bachelor fun they used to have together! Now all of his best friend’s time will be spent with his new wife and their families. So, we totally understand his position on an otherwise happy day.