hey,
I wonder, even if the probability so small is, if someone else get the same private key as me could he/she spend my Bitcoins and viceversa? would we have the same Bitcoin Adress?
you may not necesarily have the sam ebitcoin account as it changes upon every transaction depending on the wallet you are having its keys (not exchanger wallet). but be rest assured that it is one private key to one wallet. whether or not the private key is in the hands of two people but also note that the algorithmn can not generate two identical private keys on its blockchain as it was not design to perform in that capacity.