The (Im)Perfect Soulmate An ELI Talk by Rabbi Shlomo Slatkin
(כד) עַל־כֵּן֙ יַֽעֲזָב־אִ֔ישׁ אֶת־אָבִ֖יו וְאֶת־אִמּ֑וֹ וְדָבַ֣ק בְּאִשְׁתּ֔וֹ וְהָי֖וּ לְבָשָׂ֥ר אֶחָֽד׃
(24) Hence a man leaves his father and mother and clings to his wife, so that they become one flesh.
(יח) וַיֹּ֙אמֶר֙ יְהוָ֣ה אֱלֹהִ֔ים לֹא־ט֛וֹב הֱי֥וֹת הָֽאָדָ֖ם לְבַדּ֑וֹ אֶֽעֱשֶׂהּ־לּ֥וֹ עֵ֖זֶר כְּנֶגְדּֽוֹ׃

(18) The LORD God said, “It is not good for man to be alone; I will make a helpmate against him.”