Enchule is a colloquial and vibrant word that means to be completely smitten or 'hooked' on someone, often at first sight. It's a more intense and informal way of saying you're deeply attracted.
In the song, Tito Nieves sings, "Desde que te vi a primera vista me enchule" (From the moment I saw you, I was instantly smitten). This word perfectly captures the immediate and overwhelming infatuation described in the lyrics, making it both memorable and unique.
"De Mí Enamórate" is Tito Nieves asking the woman he loves to finally choose him back. He admits he can't stop thinking about her, and that not knowing where he stands is wearing him down.
He promises that once she does fall for him, he'll protect her and make her happy for good. It's a hopeful, romantic plea rather than a sad one, classic salsa romántica.
By the end he's speaking straight to her, saying he needs her and wants her in his arms, closing the song on the same wish it opened with: for her to fall in love with him.