Even if it's not rape, it's out of wedlock pregnancy.

Mary is described as 'ever virgin' - so did she slack in her wifely duties to Joseph following their marriage of convenience?

All of which reminded me of stories I learned in studying history but don't remember well, but I believe a princess of some sort was seduced by a guy who dressed as an angel and came through her window telling her he was a messenger from God. If memory serves he got caught and defenestrated. Can't find anything online though so maybe I'm misremembering.