Shrine of St. Valentine, Dublin. Photo by blackfish. Image from Wikipedia

See this online ebook:

On the Eve of the Feast of Saint Valentine (Valentine’s Day). For other legally free ebooks, you may access the List of Free eBooks (Arranged by Title) and the List of Free eBooks (Grouped by Subject).

“God, from the first days of creation, made them man and woman. A man, therefore, will leave his father and mother and will cling to his wife, and the two will become one flesh. Why then, since they are no longer two, but one flesh, what God has joined, let not man put asunder.” (St. Mark x, 6-9)