The word about is a preposition. The phrase about me is a prepositional phrase. The pronoun me becomes the object of the preposition in that prepositional phrase.
Dad told a story about me.
Sally told a joke about me.
Mom says she had a dream about me.
Sometimes we add a second name as part of the object of the preposition. Look at these examples:
Dad told a story about Donny and me.
Sally told a joke about Bill and me.
Mom says she had a dream about Dad and me.
Even when there is another person as part of the object of the preposition, we still use about me.
Always use the pronoun me as the object of the preposition about. People talk about me.
▶It’s your turn. Which of these sentences has the correct pronoun in the prepositional phrase? The class was talking about Jim and me. The class was talking about Jim and I. Did you choose the one that says about me? Good for you!