Maybe not bounding like a young Gazelle?
Many people find love again, even in old age, romance does not die because we are frail?
Maybe the sexual activity may be stunted, but not for all and their is nothing to be ashamed of as believers, but rather more experience of life will come to the fore?
Many of us have come from great darkness, prostitution, gangsterism, organized crime, were life was cheap and what we gained from God was freedom and respect for marriage, love and sex!
Songs of Solomon 2:7-12, 5:8, 16, Ephesians 5:22-33.