Without going into the realm of the drama llama would you order a background check/credit check on someone you were in a relationship with? If so, at what point would you? Dating 6 months, 1 year, 2 years? moving in together? engagement? marriage? Reason I ask is that I know of four marriages where there were some seriously big secrets kept by one party in the relationship that didn't come to knowledge until divorce paperwork was filed in one case after a decade of being together. Big as in kids from previous relationships they didn't tell the current soon to be ex-spouse about, prison time, an extra marriage they "forgot" to tell their spouse about, dishonorable discharges from the military, 350K in debt that the other person wasn't aware of, and buying real estate with a joint account.