I recently stumbled across The Platters (thank you Empire) and since we're married in this Fallout I think they'd be https://www.youtube.com/watch?v=PCdfiuVHUMM in that regard. And by 'in that regard' I mean in helping evoke feelings of romance and/or nostalgia. Especially The Great Pretender and My Prayer. Maybe Ebb Tide too, but that's not on the link.
Anyway, make your soundtrack suggestions here. Well, not here here. I mean below. Or next to if your reply goes on a second/third/fourth page.