Claudio. Silence is the perfectest herald of joy. I were but little happy if I could say how much. Lady, as you are mine, I am yours.
It is Claudio's desire to posses Hero that leads him to suspect his best friend of wooing his beloved:
Claudio. Tis certain so. The Prince woos for himself. Friendship is constant in all other things Save in the office and affairs of love.
This scene reveals his primary weakness, an inability to trust in others, even those he loves most. Claudio is originally portrayed as a loving, trusting man. However, as his character is developed it becomes increasingly clear that his lack of trust continues to prevent him from total devotion to both friends and lovers.
Hero, on the other hand, is Shakespeare's portrait of the constant lover; she represents the epitome of romantic love. Although Hero's view of marriage and her feelings toward Claudio are never clearly spelled out "through spoken word, her true affection is revealed through her discussions with her cousin and gentlewomen, and through their interpretations of her coyly withheld emotions.
Beatrice. My cousin tells him in his ear that he is in her heart