9 Ways to Find Out Who Your Boyfriend’s Partner Is if You Get the Feeling He’s Cheating

6. Get him to show you the receipts in his wallet.

“It’s a standard way of finding out about an affair.” Some girls caught their boyfriends by asking, “Who did you go here with?” based on their receipts. There could be lots of clues: “This isn’t the kind of café he would go to with his guy friends,” or “They bought dessert even though he doesn’t like sweets.”