This photo lay undeveloped for 45 years. Can I find the location and track the couple down?

Today's episode of Geo Detective features two 1970's photos. First I'll try and locate the exact sidewalk where Sarah's Groovy Dad stood some 50 years ago, and then we move on to something really different; an undeveloped photograph, hidden away in a dusty old camera for 45 years and discovered in a charity shop in 2025. Until very recently, no one had laid eyes on this photo. Not only do I get to try and find out exactly where it was taken, but together we have the opportunity to try and hunt down the romantic couple in question in the hopes that maybe they can travel back to the location and recreate the photo. It's a long shot, but what a story it would be..