ユダヤ教で「複数の人との同時交際」は罪ですか？

Judaism's dating landscape spans the widest range — from the shidduch system's structured, purposeful meetings to fully secular norms — but the operative ethic is consistent across the spectrum: honesty about what this is. The Talmud's geneivat da'at (Chullin 94a) — the prohibition of creating false impressions — is the classical category rabbis apply to the person who lets three suitors each believe they're the only one: each has had their judgment stolen, and if any decision (emotional, physical, financial) is made on the false impression, the wrong compounds. The biblical courtship models the tradition cites run monogamous in spirit: Jacob's seven years 'seemed to him but a few days because of the love he had for her' (Genesis 29:20) — the text's ideal is single-mindedness. Orthodox practice, through the shidduch system, typically makes exclusivity structural: one introduction explored at a time, families informed, and the relationship defined from the start as marriage-directed. Contemporary Jewish ethicists, writing for the dating-app generation, keep the same floor: non-exclusive early dating is not forbidden in secular halakhic terms, but every person you're seeing is owed the truth that they're one of several — and the tradition's counsel adds: if you cannot tell them, that is your answer.