It is from the perpective of a man who is may be unsure of his feelings for a woman. He doesn't want to lead her on, so he maintains a distance, yet crosses it from time to time - but remains detached. He knows that the woman would give him everything, but he can only be there "sometimes". I think he is in like with the woman but not entirely in love - and maybe he wants to be, which is why he is torn "sometimes I cry, sometimes I die". "I Want It All" means he wants to feel a love for her - all
or nothing - but doesn't, but is willing to try.
It is from the perpective of a man who is may be unsure of his feelings for a woman. He doesn't want to lead her on, so he maintains a distance, yet crosses it from time to time - but remains detached. He knows that the woman would give him everything, but he can only be there "sometimes". I think he is in like with the woman but not entirely in love - and maybe he wants to be, which is why he is torn "sometimes I cry, sometimes I die". "I Want It All" means he wants to feel a love for her - all or nothing - but doesn't, but is willing to try.