This song is a super fun and persuasive argument for a new romance! Quevedo is trying to convince a girl, who has clearly been hurt before, to give him a chance. He knows she's guarded, singing that in her heart, "cabe poquita gente, como en La Graciosa" (few people fit, like in La Graciosa). La Graciosa is a tiny, beautiful island in Spain's Canary Islands, where Quevedo is from, so he's saying her heart is very exclusive and hard to get into, just like the island.
He spends the whole song trying to break down her walls. He promises he's not like the last guy who left her with a broken heart, insisting, "No te voy a fallar, no, no / No te voy a engañar" (I'm not going to fail you, no, no / I'm not going to cheat on you). He suggests a relaxed, fun time together, taking her on a tour of the Canary Islands and kissing in the water for everyone to see. It's all about letting go of past pain and enjoying the moment, because as he says, "La vida es bonita, ¿por qué con ella sigues tan enfadada?" (Life is beautiful, why are you still so angry with it?).