Complex sentence: Divorce courts require proof be given that the grounds actually exist; this can be accomplished by providing testimony from a hired detective with documentation of the spouse's bad behavior or from someone who witnessed or has first-hand knowledge of the spouse's bad behavior.
Split into simpler sentences: Divorce courts require proof be given that the grounds actually exist. This can be accomplished by providing testimony from a hired detective with documentation of the spouse's bad behavior or from someone who witnessed or has first-hand knowledge of the spouse's bad behavior.