Arianna, I know exactly the feeling you mean, but you're dead wrong. Your theory completely falls apart in the chorus.
The first verse is clear, it describes how long the singer has loved the other person.
The second verse starts off in the same vein, and also implies that they are together, but then brings up something else. Something hidden, that hurts the other person.
The singer sees this, and is hurt that, not only is the other person so upset by this, but that the other person is keeping this from them (What would touch me deeper, tears that fall...). They can also see that this has been going on for some time, and is deeply troubling the other person (...from eyes that only cry.) They start to wonder what it could be, and why they would hide it from them. The singer realizes that them knowing would hurt both themselves, and the one they love, even more (Would it touch you deeper? Tears from eyes that know why?).
Realizing this, the singer worries even more, both frantic to know, and terrified of knowing (A lifetime of questions.). Eventually, they confront the one they love (Tears on your cheek.), and find out what's going on (I tasted the answers). They find out that they were right, now that they know the truth, it hurts more than they can bear (My body was weak, for you, the truth).
The truth is too much for them to bear (What would touch me deeper...), and they can't handle it (Tears from eyes that only cry.). They understand why the one they love hid it from them (Would it touch you deeper?), but it is too late (Tears that fall from eyes that... know... why...).
Arianna, I know exactly the feeling you mean, but you're dead wrong. Your theory completely falls apart in the chorus.
The first verse is clear, it describes how long the singer has loved the other person. The second verse starts off in the same vein, and also implies that they are together, but then brings up something else. Something hidden, that hurts the other person. The singer sees this, and is hurt that, not only is the other person so upset by this, but that the other person is keeping this from them (What would touch me deeper, tears that fall...). They can also see that this has been going on for some time, and is deeply troubling the other person (...from eyes that only cry.) They start to wonder what it could be, and why they would hide it from them. The singer realizes that them knowing would hurt both themselves, and the one they love, even more (Would it touch you deeper? Tears from eyes that know why?). Realizing this, the singer worries even more, both frantic to know, and terrified of knowing (A lifetime of questions.). Eventually, they confront the one they love (Tears on your cheek.), and find out what's going on (I tasted the answers). They find out that they were right, now that they know the truth, it hurts more than they can bear (My body was weak, for you, the truth). The truth is too much for them to bear (What would touch me deeper...), and they can't handle it (Tears from eyes that only cry.). They understand why the one they love hid it from them (Would it touch you deeper?), but it is too late (Tears that fall from eyes that... know... why...).
This is a song about being cheated on.