Who took out this piece of important information from the narrative about marriage and relationships- the information that includes the truth that it is only by understanding, accepting, celebrating, and appreciating the essence and value of your significant other that true bliss and beauty can be achieved? Otherwise, how else do you want to explain the idea that you would be married to one person for the rest of your life?
If marriage and relationships were designed to mirror the relationship between Christ and the Church, then it is easy to notice and observe how Jesus treats His bride with honor, value, and essence, so much that He supplies new mercies every day. This is the picture of what marriage should be and this picture should not be redacted.
Before you think of this as a duty to perform, think of it first as a revelation to be believed and received; the idea that Jesus has chosen to see you for all eternity as valuable and relate with you from that standpoint. Are you ready to receive this truth?