It's her cousin's wedding so he's wearing the little round hat. Rachel stares at her cousin's poofy dress. The groom looks nervous. Finn would be, too, but also excited. Because Rachel would be amazing in such a dress.
The rabbi chants - it sounds like Klingon. Soon though - listening, the words like music, the bride and groom holding hands, Rachel's hand in his, dusty sunlight falling through high windows - something fills him. Powerful, like the ocean, like Rachel's voice.
It fills him so much he's crying. So wussy. But he can't stop. Is it just love? Maybe it's God.