Love means obeying the commandments. "If you love Me, keep My commandments;" but after years of religious non-education, most Catholics probably could not even tell you what they are.
My children have attended their obligatory CCD classes for years, and do not know anything about the following, other than what my wife and I have taught them ourselves: the book of Genesis, the 10 Commandments, the significance of God's covenant with the Jews, the Psalms, the prophets, the parables of Jesus, the book of Acts, the letters of the New Testament, or Revelation.