Since your husband is not Catholic, I presume he will not pay attention to anything from the Catechism, or other documents of the Church. Instead, have him read Ephesians 5 tonight:
Husbands, love your wives, even as Christ loved the church and handed himself over for her
to sanctify her, cleansing her by the bath of water with the word,
that he might present to himself the church in splendor, without spot or wrinkle or any such thing, that she might be holy and without blemish.
Christ came to Earth, died and was resurrected, so that His disciples (His Church) could have salvation. This was his Pascal sacrifice, made out of divine love of all humanity.
Husbands are to do the same on this earth. They are meant to sacrifice themselves for their wives and families. Their vocation is to guide their families toward holiness, so that they also can be counted among the ranks of the predestined.
This is not just Catholic Theology. Protestant and Evangelical denominiations have the same interpretation of Ephesians 5. In fact, there are entire Evangelical ministries that have sprung up, to bring forth this message:
So no, this belief is not just among Catholics. If your husband doesn’t get this, have him open an account here, and we will explain it to him, in simple, charitable terms.