
There are several ways of discovering the truth about a spouse's suspected infidelity. One of these is finding a physical proof which a cheating spouse will find extremely difficult or impossible to refute. The proof should as much as possible leave no room for the cheater to perpetuate further lies.
Physical proof may be comprised of unfamiliar articles of clothing of the opposite sex, suspicious stains on the cheater's clothing, unusual and unexplained marks on the body, illogical presence of items such as receipts and any form of record that does not reconcile with the cheater's supposed location during a period on question, and traces of any specimen of human origin that provides reasonable doubt as in strands of blond hair on pillows and car upholstery when the wife is a brunette. The doubting spouse in this case is looking for actual proofs which can undergo testing either through laboratory means or scientific questioning in the case of receipts and other written records. These proofs can provide more than circumstantial evidence which could possibly cut the chase to the truth.
We are not merely talking about feelings and hunches here. These are the proofs that can can push cheaters to a corner and make them confess. Cheaters usually realize the futility of denying when doubting spouses go for the physical proof of infidelity and manage to get the most damning ones to prove guilt.
It takes courage to seek physical proofs of spousal cheating since doubting spouses are forced to face the truth which they may not be prepared for. No one really comes fully prepared for discovering betrayal but having the truth is the only way to prepare one's self for a better life. Lies only cushion the pain for a while since it will have its say in due time.