Rompecorazones literally translates to "heartbreaker". It's a compound word that vividly describes someone who frequently breaks hearts.
In the song, the lyrics state, "Su deporte favorito rompecorazones" (Her favorite sport is breaking hearts). This phrase uses the word to characterize a person who enjoys toying with others' emotions, making it a memorable and impactful word in the context of the song's narrative about complicated relationships.
This song by Venezuelan duo 3AM dives into a relationship that's all about passion and has zero emotional strings attached. The lyrics describe a woman who calls the singer for late-night encounters, making it clear that she doesn't want to be treated like a "lady" (dama). She sets the rules for their connection, and the number one rule is: don't fall in love.
She openly tells him, "don't get your hopes up" (no te ilusiones), as her "favorite sport is breaking hearts" (su deporte favorito [es] rompecorazones). Their time together is described as "nights of passion with zero emotions" (noches en la pasión con cero emociones), where both are just looking for "fun without worries" (diversión sin preocupaciones). It's a look at a modern, purely physical relationship where love is intentionally kept out of the picture.