"And you can take off your disguise Cause I can see the truth that's hidden Behind your eyes "
The person is hiding something and the other person (their gf/bf) can see it but still doesn't know what it is.
"And all those words that you don't say just mean less and less each day you can't make me shed a tear ..."
The words you don't say = the thing the person is hiding that will eventually make them grow apart or separate (they mean less and less each day)
"And you can take off your disguise Cause I can see the truth that's hidden Behind your eyes "
The person is hiding something and the other person (their gf/bf) can see it but still doesn't know what it is.
"And all those words that you don't say just mean less and less each day you can't make me shed a tear ..."
The words you don't say = the thing the person is hiding that will eventually make them grow apart or separate (they mean less and less each day)