The line "I am slain by a fair cruel maid" shows that the speaker feels he was killed by the rejection that a woman, in this case the cruel maid, has imposed on his love. That is, in this line the speaker shows that he was rejected, that his love was unrequited, so he feels that his beloved has killed him, since she does not love him and he believes, that living without this love is the same as dying.
The recklessness is defined as a state of mind where the person is aware of the fact that it is deliberately and unjustifiably taken up as an action and it disregards any risk form those actions and are blameworthy than the careless behavior.
