conclude, he is in love..."
See in text (Act III - Scene II)
Recall that Beatrice prefers men without beards. Considering the theme of love as a loss of freedom, Benedick’s shaving of his beard here becomes a symbol of his domestication by love. When Claudio compares Benedick to a lute (a musical instrument used in serenades,) he draws on the motif of love and music and implies that Benedick is merely an instrument that has been played by love.