Happy Birthday Tracy hope you are having a great Birthday

Hi - not sure how big a fan you are of family ties, but I am after a song titled that was used during one of the episodes. All I can remember is that Alex and Ellen were about to separate at a train station and there's a song playing the background...about..."what would you say...if I said that I loved you..." and then they still part...do you remember the title of the song...hah...with such vague information..no worries, if you can't remember which particular episode i'm referring to :)