Galán translates to "ladies' man" or "charmer," often implying someone who is attractive and skilled at wooing women.
In this song, J mena uses it sarcastically to call out a man who tries to deceive many women with his "fama de galán" (reputation as a charmer). It's an interesting word because it highlights a specific type of male character often seen in Latin culture, and here it's used to expose his manipulative nature.
J Mena's "Dos Corazones" is a fierce anthem about bouncing back after a breakup! She's totally over an ex who clearly didn't appreciate her, singing "Te di mi corazón y tu lo dejaste caer" [I gave you my heart and you let it fall]. Now that she's gone, he's trying to get back in, but she's having none of it. She even throws a little shade, asking "Dime, dime cómo se siente Ser el que no es suficiente" [Tell me, tell me how it feels To be the one who isn't enough].
This song is all about reclaiming your power. J Mena confidently declares, "Pensaste que por ti iba a morir pero No no Yo tengo dos corazones" [You thought I was going to die for you but No no I have two hearts]. She's moved on and isn't afraid to tell him that his "fama de galán" [ladies' man reputation] isn't fooling anyone, especially since "La única que te soporta es tu mamá" [The only one who puts up with you is your mom]. It's a fun, sassy track for anyone who's ever realized they're better off without someone!