The song "Sweetheart" by Engelbert Humperdinck is a heartfelt plea from the singer to his loved one. The lyrics express his desire for the person to stay by his side and not leave him. If their heart tells them to leave, he asks them to at least explain why they've forgotten the promises they once made. The singer states that as long as he has the person next to him, guiding and supporting him, their love is strong and cannot be torn apart by anyone else. He cherishes the love they share and vows to continue calling them sweetheart. However, the singer also acknowledges that if his love is not enough to make the person happy, he will accept it and step away. He asks them to simply open the door and he will disappear from their life. Yet again, he wonders why they've forgotten the words they once spoke. Overall, the song portrays a mix of longing, confusion, and a plea for understanding. It expresses the singer's deep love and desire for the person to stay, despite the uncertainty surrounding their relationship.
