me too

Ответ от PanteRRa[гуру]
Question: I'm confused, why do people use "me too?" and not "I too?"thanks.
Reply 1: There are, of course, times when "I, too" would be appropriate. Fact is, we just say me too.
End of phone conversation: "I love you". "Me too", meaning I love you, too. In actuality, it is saying I love me too, but we know that isn't the intent
Reply 2: It's a tradition. It's a shortened form of "The same is true for me too".
Лучшим объяснением будет именно 2ой ответ, думаю
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