Focus on the pronunciation of sweetheart
English definition of “sweetheart”
/ˈswitˌhɑrt/ n [C] (infml sweetie /ˈswit̬·i/)
› a person you love, esp. one with whom you have a romantic relationship: Jeanne was my high school sweetheart. Hi, sweetheart. › A sweetheart is also a kind, generous person: She’s a sweetheart.