Why does the groom wear a boutonniere?

The groom wears a boutonniere as a traditional symbol of his role in the wedding, serving as a visual identifier that distinguishes him from the guests. It is typically a small flower or decorative pin that complements the bride's bouquet and the wedding's overall theme. Additionally, the boutonniere represents love and commitment, adding a touch of elegance to the groom's attire on this significant day.