To me, this is a song about how someone tried to help him, but he didnt feel like he deserved their help, and pushed them away.
"I know you tried to rescue me
didn’t let anyone get in"
"I am
tainted
the two of us
were never meant to be"
Its also about regret. He regrets how he pushed that person away, because he now realizes just how much they meant to him
"in my
nothing
you meant everything
everything to me"
He realizes that if he hadnt pushed them away, there could have been a beautiful future.
"and all that could have been"
To me, this is a song about how someone tried to help him, but he didnt feel like he deserved their help, and pushed them away. "I know you tried to rescue me didn’t let anyone get in"
"I am tainted the two of us were never meant to be"
Its also about regret. He regrets how he pushed that person away, because he now realizes just how much they meant to him "in my nothing you meant everything everything to me"
He realizes that if he hadnt pushed them away, there could have been a beautiful future. "and all that could have been"