Be deceived by (4,3)
I believe the answer is:
fall for
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">be deceived by</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for fall for that I've seen before include "Succumb to charm or love" , "Take romantic liking to- steady on!" , "Have romantic feelings for - or be taken in by?" , "Be taken in by - romantically?" , "Be deceived" .)