Rafagasos is a fascinating word because it's not commonly found in standard Spanish dictionaries in this context. It's derived from ráfaga, which means a 'gust' or 'burst' (like a gust of wind or a burst of gunfire).
In the context of this song, and in some urban slang, rafagasos is used to refer to passionate, quick kisses or intense moments of affection. The line "Ya no hay besos ni rafagasos" implies that not only are there no more standard kisses, but also none of those intense, fleeting bursts of passion that once existed between them, making it a unique and evocative choice.
"Que Te Vaya Bien" is a heartbreak song about letting go with grit instead of tears.
The singer opens by calling his ex a traitor and admits everything he taught her still won't leave her mind. He's clearly hurt, but he insists he won't come back to her, even as he confesses the feelings never really went away.
The chorus is the emotional core: he wishes her well, "espero que te vaya bien," even while the pain of losing her is eating at him. It's a proud, bittersweet kind of goodbye, wanting the best for someone who broke your heart.
In the verses he leans into a bit of drama and self-mythology, saying he wrote her a song, a poem in his own blood, and that even after he dies he wants her to celebrate, not grieve. It's less literal and more a way of showing how deeply he loved her, and how he's choosing pride over begging her to stay.