The wedding heart signifies the wedding coventant. It is a lasting reminder of the bride and groom coming together with their faith in Christ, beginning their life long journey as one.
The bold outer heart represents the groom. He is the strength and cover for his family and home, yet without his bride, incomplete.
The intricate inner heart represents the bride. Beautiful and multi-faceted, she brings her creative abilities and wisdom.
The couple then trust their hearts to one another combined with their faith in Christ together, joining their pieces of the unity heart and demonstrating their commitment to one another.
Thus completing the scripture, ...And The Two Shall Become One