What does the messenger explain to Beatrice that Benedick has done in Act I Scene 1?

In Act I, Scene 1 of William Shakespeare's "Much Ado About Nothing," the messenger does not convey any specific actions or deeds performed by Benedick to Beatrice. Benedick is primarily engaged in bantering with Benedick and teasing him about being in love with Beatrice. There is no mention of Benedick taking any significant actions in this particular scene.