The parentheses are not literal translations, but I believe they better convey the meaning of the writer. In English, to be one's master has a negative connotation. In Spanish, it means more that "you belong to me", which, come to think of it, is equally objectifying and potentially sexist if you really look at it. I added the word, "up" as otherwise the whole song doesn't make sense to me. It would mean he never wanted to fall in love. Maybe it means he fell in love against his better judgement and wishes. Maybe he really never wanted to surrender completely to her, but wanted her to surrender completely to him, and so, when he could not reconcile that hypocrisy, he left, saying "forget it: it was nothing." The lyrics are not clear. You decide.