Her opinion is certainly the nicer opinion. With time, John will learn to look at things a little more optimistically. He can't deny that Lucy and Carmen made the evening better. It was also a little exciting to meet Carmen. Dean doesn't bring girls home. There's never been time for that nor were the circumstances right. He'd known Carmen wasn't a demon because he'd asked Dean when he mentioned having her over for Thanksgiving. He also might have whispered christo when he passed the potatoes).

He is both of those things. Being a stubborn ass gets in the way of both his maturity and his intelligence. Sam and John have never been good at meeting in the middle. They're far too much alike for that. John softens when Mary reaches for his hand, sighs a little and squeezes her hand almost as an agreement. He's quiet a moment then speaks with weariness in his voice. "Mary...this can't be what's best for him." There's a touch of doubt in his voice though because at dinner (and every other time they've seen them) in those moments that Sam and Ruby weren't thinking too much about everything, when they weren't awkward, they were happy; Ruby makes Sam happy, and even John can see that. He's just having a hard time accepting it.