Well, practically all adjectives in Spanish/Portuguese/French/Italian change depending on the grammatical gender of the noun they refer to. And, of course, if the noun in question is "I" (as in your case), then they reveal the (physical) gender of the speaker because usually

    grammatical gender of a person == physical gender of that person

But compared to the differences in, e.g., Japanese that some people here are discussing, this seems rather minor.