Steal somebody's heart - Idioms by The Free Dictionary
steal somebody's heart
steal (one's) heart
To captivate someone; to instill in someone a deep affection or love. The young actress has stolen the nation's heart. I'm married, and I know this is wrong, but you've stolen my heart.
steal somebody’s ˈheart (literary) make somebody fall in love with you: As he became more well known, his good looks and charm stole young girls’ hearts all across the country.