"Sweetheart" by TokyoRxckstar is a song that explores the complex emotions and uncertainties in a romantic relationship. The lyrics ask thought-provoking questions, such as "Would you love me, if I couldn't touch you?" and "Would you want me, if I didn't want you?" These questions reflect the insecurities and doubts that can arise in a relationship. The chorus, "Valentine, do you believe in Valentines? Valentine, I don't believe in the right time," suggests a skepticism towards traditional notions of love and timing. The singer seems to question the significance of Valentine's Day and whether it holds any meaning in their relationship. The bridge of the song delves into the theme of emotional pain and the fear of being rejected. The lines "Do you hate me, for making you un-numb? I can see it in your eyes" express the singer's concern about causing pain to their partner and being different from others who have hurt them. Overall, "Sweetheart" conveys the struggles and uncertainties of love and relationships, and the singer's plea for understanding and acceptance. The song reflects the universal experience of navigating the complexities of romantic connections and the emotional challenges that come with them.