Breach of Promise laws generally refer tothe loss someone
suffers when their partner breaks up with them just before their
date of marriage, or "leaving them at the altar", which is not
showing up for the wedding. These laws are largely outdated.
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Breach of promise applies when a promise is not kept. Legally
documents are needed to prove a breach of contract. In a
relationship, it depends on the people involved if they would
consider such acts as breaching a promise.