I always felt this was a really poignant scene in the film that not many people talk about. Marty's most recent memories of his parents and their relationship wouldn't be happy ones from what we see at the beginning of the film, so it's a nice little scene where he gets to see what they were like as they fell in love as young kids.
Great piece of music too by Alan Silvestri.
![](https://i.ytimg.com/vi/XU19CYiN0LQ/maxresdefault.jpg)