The song was first released in February 1964 by Dusty Springfield. It reached #12 on the Billboard charts. The Bay City Rollers released it in December 1976 and also reached #12. It charted again in 1989 by Samantha Fox and reached # 35. The song was Dusty Springfilds first hit and helped propel her career and induction into the Rock And Roll Hall Of Fame. (I don't think BCR "made the song more famous").I love this song! It can be interpreted in so many ways. Some versions sound like Mike's description, some sound like it's about someone finally admitting to his crush that he's been crazy about her for a while...not quite sure why but just needs her. I know that when I'm in a certain mood, the meaning of the song changes for me. That's the beauty of the song, it is the perfect blend of passionate feelings and simplicity.