Girlfriend (9)
I believe the answer is:
inamorata
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">girlfriend</span>' is the definition.<br/ ><span class="explanation-format__explanation">(an inamorata is a lover)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for inamorata that I've seen before include "A woman loved" , "Woman in love" , "Woman beloved" , "Beloved of one another" , "6 across [BOSOM] friend" .)