They need each other

I know a girl
who is a dark lonely prison
She is an artist
all she has is crimson

I know another
she is in a similar hell
Darken rain falls
into her cell

When they're together
I see a world bright
Alone they have
starless nights

I put two and two
together
I figured out
they are perfect for each other

Now they need to see
this for themselves
or otherwise
they'll remain in their hells