Enfeiticei comes from the verb enfeitiçar, which means 'to bewitch' or 'to enchant'. It's a captivating word that evokes a sense of magic and being under a spell.
In the song, Jorge Ben Jor sings, "Por você eu me enfeiticei" (Because of you, I became enchanted/bewitched). He uses this word to express how deeply and irresistibly he fell in love, as if he were under a love spell cast by the other person. It's a much more evocative way to say 'I fell in love' and adds a unique, almost mystical, dimension to the lyrics.
Jorge Ben opens with the title as a confession: "Quero esquecer você" [I want to forget you]. It isn't a song about anger after a breakup, it's about a plan that keeps failing. Every verse circles back and admits the opposite of what it just said. He tells us "Por você eu me namorei" [I fell in love with you] almost like evidence against himself, proof that forgetting was never realistic once a kiss got involved.
By the time he sings "Querer você tanto assim" [Want you so much], the title's whole plan is dead. That's the trick of the song: a bright, driving samba that spends two and a half minutes trying to talk itself out of a feeling and loses every single time, the guitar sounding far too cheerful for how stuck he really is.