I was taught and many other people too in my Catholic upbringing that the body is the temple of the Holy Spirit. A Course In Miracles makes it clear that the body is not the temple of the Holy Spirit but relationships are. It is written in ACIM: "The Holy Spirit's temple is not a body, but a relationship." T-20.VI.5:1 Section VI, The Temple of the Holy Spirit describes this idea in more detail. It is our relationship with our Creator and our fellow Creations in which the Holy Spirit abides. Jesus told us the same thing in the New Testament when he said, "Where two or more are gathered together in My name, there I will be."
Rev. Marlin Lavenhar at All Souls Church in Tulsa Oklahoma gave a wonderful sermon on October 29, 2017 entitled "Gone But Never Forgotten" in which he makes the point that love never dies. Bodies do, but not love. Love just changes form. Love is eternal. People with highly developed spiritual awareness know this. It is another indicator of spiritual maturity.