Did Richard know at the reunion?
This has been driving me crazy... lets think past the reunion for a second...
Peggy goes back in time (assuming she does actually go back) approaches Richard, convinces him she is a time traveller, they come up with some get rich schemes, he asks her to marry him which she refuses. Obviously she meant something to him. Then she ends up with Charlie and we assume - her life plays out from then on...
O.K now lets go back to the reunion...
Richard notices Peggy Sue walk in, as though he has been waiting for her, he approaches her, asks about Charlie, sits at her table, dances with her and seems to have a strong connection with her, and although she is pleased to see him - doesn't seem to have the connection he does. When they are on stage he's watching her very closely.
Do you know why? Because he knew she would go back. Think about it. He's a rich inventor. It's because of the things she told him. Has he been waiting all this time to see her and he can't say anything because he knows she's got to go back?
Thoughts?