Imo, this is about the feeling of unfairness one - desperately in love - has. It's a feeling hard to understand, as the one he loves cannot be obliged to feel the same way about him. Nevertheless, he has a deep feeling of injustice, as though he is mistreated, because he cannot accept that his love is in vain. However, this is extreme: pleading for mercy he asks as a last thing to know if he should live (in hope that his love will eventually be requited) ...or get on with dying.
Imo, this is about the feeling of unfairness one - desperately in love - has. It's a feeling hard to understand, as the one he loves cannot be obliged to feel the same way about him. Nevertheless, he has a deep feeling of injustice, as though he is mistreated, because he cannot accept that his love is in vain. However, this is extreme: pleading for mercy he asks as a last thing to know if he should live (in hope that his love will eventually be requited) ...or get on with dying.
I'm not really sure though... I could be wrong.