Descongelarlo literally means "to unfreeze it." It's an interesting and somewhat unexpected word to find in a romantic song, making it memorable.
In the lyrics, Beret uses it metaphorically: "Cómo explicarías que el fuego / Que quema todo a su paso / Si entra por tu corazón / No logra descongelarlo." He's questioning how even the most intense passion (fire) can't melt or soften a heart that remains cold or unresponsive, adding a layer of emotional depth to the song.
Have you ever missed someone so much that you wish you could just switch to a different universe where you could be together? In "Si Te Vuelvo A Llamar," Spanish artist Beret explores this exact feeling of heartbreak and longing after a relationship has ended.
The song is a powerful internal monologue. The singer knows he shouldn't call his ex because she's already with someone new, as he imagines her "lying on his chest." Yet, he can't stop thinking about her. He uses powerful metaphors from nature, like hurricanes and tides, to describe how people can hurt each other without meaning to. He's caught between the reality of the breakup and a desperate fantasy where they could embrace so tightly they'd run out of air, wishing he could give back the love she once gave him.