“James is getting a bit frustrated shut up here, he tries not to show it but I can tell – also, Dumbledore’s still got his Invisibility Cloak, so no chance of little excursions. If you could visit, it would cheer him up so much.” Lily’s letter to Sirius Black, Harry Potter and the Deathly Hallows.
James and Lily in early October, clueless about their future.
if it happened at all, it happened like that 