irreplaceable?

someone said tat it was a good attempt
yea it reli was one.
i dun get wt means the last time
n im not wishin to know.
if ur tellin me its the last time
wt more should i say?
im not sayin tat i regret now or wtever
wt happened? I'VE NO IDEA.
thankyou for all u've done
i knew it frm the very beginning
u've always been a treasure for me
i hope u reli know though i didnt say it out
do u know wt means IRREPLACEABLE?
haha mayb its too late.
你說過 你也會軟弱 需要倚賴我我卻裝不曉得 自由移動 自我地過
我竟然沒有調頭　最殘忍那一刻靜靜看你走　一點都不像我