“The Sacred Heart of Jesus is the entirety of Christ’s love and devotion for us. It is not a thing but a complete concept of our loving God. It encompasses not just the love of Jesus but also His Father and the Holy Spirit.”
OK, the entirety of Christ’s love is amazingly wonderful, obviously.
You do realize that God the Father and God the Holy Spirit are different persons of the Godhead than Christ.
Why do you just give credit to Jesus?
Why do you not give credit to the “sacred heart of the Father?”
Why do you not give credit to the “sacred heart of the Spirit?”
Why call it the “sacred heart”, instead of the Loving Heart of God? That seems more in line with your understanding of the concept.
Just in case you truly want to know the history behind the concept:
http://www.catholicculture.org/culture/liturgicalyear/activities/view.cfm?id=1098