Robert really should've thought of Aaron's safety and protection before sleeping with Rebecca. When she first turned him down, he should've had the decency to realize "fuck, if Aaron finds out, he'd be devastated" and stopped, drunk or not. But he didn't, he kept on trying to sleep with Rebecca. He wanted to hurt Aaron, and in the aftermath, he suddenly wants to protect him? That's just mad lol He dug his grave, now he can bury in it.