To find if your partner is cheating on you, then it’s important that you find as much proof as you can to "prove" their wrong doing. In our case, the partner will most likely be using their cell phone to talk with their lover which is why, when trying to catch a cheating spouse, you should look through their cell phone’s incoming / outgoing calls, text messages and address book. This will allow you to find out exactly who they have been calling and then give you the best way of finding if they are cheating or not. If you note down all the numbers you don’t recognise, you can then look to see if any of the owners could be a potential lover.