Lydia's Guilt
Hi hello so I made a post a little while back talking about how the ending to the wedding scene is Lydia's manifestation of her guilt and her coming to terms with what she's lost.
This is all my opinion and my wild theories so! LETS GO
Firstly, lets talk about the wedding scene. Coming into it Lydia says "Rory loves me, that's gotta be enough" Lydia doesn't truly love Rory, just like Rory doesn't love her - Rory is using her and Lydia is allowing it to happen because she is being manipulated and she feels like she isn't going to get anyone in her life who truly understands her so it has to be enough she knows it won't ever be what she is looking for in life but she's given up at this point on finding her own happiness and resigned for "just enough"
Secondly, Rory has no respect for Lydia. It's shown extremely clearly in this scene as he breaks his promise to her about a "small" wedding, he has no respect for her wishes, just her fame. He wants her fame, he wants the attention she gets.
Thirdly, and here's where my beetlebabes heart SOARS. Lydia knows that Beej won't hurt her. There are so many subtle hints towards this, after Rory admits the truth - her first instinct is to move CLOSER to Beej, he is a safety net that she finds herself drawn to. He showed her the truth because he wanted her to make her own choices.
He knows what she needs in the moment & He respects her. Lydia is used to having her own emotions brushed off by Rory, she's used to being ignored and to tuck it all away for the show - Betelgeuse allows her to feel. Instead of invalidating her anger, her gives her an outlet for it in his own way, something that works for them both, he gets to have fun - she gets to let her anger out.
To add to this: he respects her. He banishes everyone in the church, whether he knew that Lydia would want something small or not, he still manages to get her the quiet wedding she was talking about. They just understand each other in a way Lydia's never had before.
HE IS IN LOVE WITH HER. every time he looks at her it's with adoration and love. He loves her. and this is something that HE didn't expect, he didn't expect to fall in love with Lydia but he did and now he knows he can't let that go. He continues to wait and wait and wait for her, he never pushes himself onto her - he just waits for her and that's enough for him. He will wait for centuries for her and he knows this.
Which brings me on to my next point of...
Lydia realises he truly loves her during this scene. All the times before, she had assumed that it was all for show, just like her relationship with Rory - she assumes that no one could ACTUALLY love her but during this scene is when she realises. She realises he truly does actually love her but that she won't be able to have this, she knows that Delia and Astrid will not understand, she knows that by the end she will have to banish him. She argues with her own thoughts because in front of her in a man willing to give her the life she wants and she isn't allowed it.
Beej has a similar realisation. He isn't stupid, he knew bringing Lydia into the afterlife was a violation - you can't prove me wrong that he didn't know. HE DID. he did it because he knew Lydia wouldn't understand that he just wanted to help her with no strings attached, this was his way of doing it. But he did also want to marry Lydia because he does love her. His realisation was that he lost her again, that it was over and he was going to be alone again.
WHICH BRINGS ME TO MY FINAL POINT
Lydia feels guilty for banishing him. THIS expression stuck with me throughout all my rewatches of this film. She looks resigned, she knew it had to be this way. She knew she had to banish him even if she'd realised that he loved her for HER in a way no one else has before.
She holds this expression for a few seconds, its not a fleeting moment. She truly is resigned. She only smiles again once Delia touches her and brings her back to the present.
SHE STILL DREAMS OF HIM. We don't know how long this scene is after the wedding scene but she still thinks of him, she still feels guilty. The guilt clearly keeps her up at night and MAYBE she misses him, realising that no one else will understand why she thinks of him still. No one will understand, just like no one would've understood if she hadn't banished him.
ANYWAY thats my long ass post, I've wanted to analyse the small emotions in these scenes for so long, and as said above - its all my thoughts! I'm a silly shipper so maybe I'm looking too into it I just love them