he walked inside the front door, 4 am. Apparently he had to work a little later.. but you weren't stupid, you've suspected for a while now..

You had heard the voice mail from the house phone.. a woman asking when he wanted to come over again. Proof enough

You were sitting on the couch, TV on

Why aren't you in bed darlin'.. it's late..? He asks.. as if nothing happened.. as if you didn't already know