I have heard that the soul is tied to your wife or husband, but if so, can you break off that "soul-tie" ?
closed as unclear what you're asking by sabbahillel, mbloch, Scimonster, Daniel, Gershon Gold Mar 29 '16 at 13:04
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You're probably thinking of the "besheret", literally destiny, but understood to be analogous to soulmate. There is Jewish imagery which indicates that each man and woman were created as one entity metaphorically joined at the back, which was separated and brought into this world with the purpose of joining back together. This is purported to be based off making Genesis 1:27 mesh with the Adam and Eve narrative, though the idea is first documented in Plato's Symposium in a speech given by Aristophanes.
There are talmudic and midrashic examples of the idea that G-d is the one who is responsible for matches. (e.g. Genesis Rabba 68:3-4, Sotah 2a, Sanhedrin 22a) However, this is not so strong as a soulmate. G-d could very well have reasons for setting up an unsuccessful marriage that is beyond our wisdom. Also, this does not mean we must go through with G-d's plans. This would be a violation of freewill. The Rambam rejects the idea of soulmates in Shemoneh Perakim 8
[There is no contradiction to this from the following] statement of our Sages: “Everything is in the hands of heaven except the fear of heaven.” This statement is true and conforms to the conceptual framework that we have explained. Nevertheless, many people err with regard to it and imagine that a person is fated with regard to many of the matters in which he is given free choice: e.g., whether he will marry a particular woman or acquire a sum of money through theft.
This is absolutely not true. For if a person marries a woman, granting her a marriage contract and performing the rites of kiddushin, he is performing a mitzvah, and God does not decree that we will perform any mitzvot. Should the marriage be forbidden, [entering into it] is a sin, and God does not decree that we will perform any sins.
The idea of a soulmate is also undermined by the laws concerning divorce. Divorce, while not considered ideal, is not considered to be wrong for forbidden such is the case in other religions. If G-d was in the business of forming unbreakable soul bonds, he would not have revealed ways to break said bonds.