The expression of love at a wedding is priceless. It is the heightened day of anticipation for the couple, friends and family gather around to see them kiss and be presented as husband and wife. I recently officiated a wedding for a couple, and they chose this as one of the scripture readings. I believe they chose this because we spent a significant amount of time equipping them as a couple with skills of communication, conflict resolution, and most importantly seeking and granting forgiveness....for the benefit of their marriage (not their wedding day).
When they chose this as their main scripture to celebrate the launching of their life together, it was significant. Basing their long term relationship on the trust of love for one another in words and in their actions is a great metaphor for the church.....Oh wait, that is exactly what Jesus gave us; the church as the bride of Christ, a deep intimate love between Christ and God's people. One based on love that expands to a tangible witness of the love we share with Christ.