Patrocinar literally translates to 'to sponsor' or 'to finance', a formal term you would typically expect to hear in sports, brands, or business.
In this song, Xavi uses it playfully when he tells his crush, "te voy a patrocinar" (I am going to sponsor you). It is a humorous and modern way of saying he wants to completely fund her luxurious lifestyle, treating her to designer bags and lavish VIP vacations in Cancun and Dubai.
If you want to see someone completely lose their cool over a crush, put on "En Privado". Mexican singer Xavi teams up with Manuel Turizo to brag about falling head-over-heels for the prettiest girl around. The lyrics take the idea of spoiling someone to a ridiculous level: private jets, luxury trips, and flashing cash. They promise flights from Cancún to Dubai, buying Louis Vuitton, and gifting a diamond ring ("un anillo con ice" [a ring with ice/diamonds]). The grand gesture to top them all? Cleaning out the phone contacts: "Hasta borro las morras que tengo en el Insta" (I’ll even delete the girls I have on Instagram).
Beyond all the luxury flexes, the song is basically a rush of pure infatuation mixed with alcohol and zero impulse control. Lines like "Borracho, llamo al cura y contigo me caso" (Drunk, I'll call the priest and marry you) make it clear this isn't a slow, careful romance. They are in such a hurry to be together that twelve months in a year aren't enough: "quiero trece" (I want thirteen). It is loud, bold, over-the-top party talk where love means shutting down the club and flying private every single time.