same here and me too are usually interchangeable. They mean that whatever the last person says applies to you, as well. So they may come after: "I love pineapples" (I also love pineapples) "I was held up in traffic" (I was also held up in traffic) "I'll have a tea with milk, no sugar" (I'll have the same thing) Me neither means the same thing, but is only used after negative sentences, such as: "I don't like pineapples" "I can't make it today" "I haven't got any money"