Hero's lover (7)
I believe the answer is:
leander
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hero's lover</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for leander that I've seen before include "He swam for love" , "In Greek legend, lover of Hero who drowned in the Hellespont" , "Learned Greek lover who swam Hellespont to meet Hero" , "Ill-fated lover" , "Hero-worshipper" .)