The Garden of Eden story is strange, isn't it. I assume you have a copy of Genesis 3 to hand:
v3 God says to Eve "You musn't eat the fruit of the tree of life or you will die"
v4 The serpent says "You won't die if you do"
v22 God says he must send Man out of Eden "lest he eat of the tree of life and live for ever"
So God was wrong in v3 and the serpent was right- eating the fruit does NOT kill you, it makes you live for ever.
They say that lies make a poor basis for a relationship.