Benedick and Beatrice have many similarities. The dislike towards marriage is something Beatrice and Benedick both share. "And trust no agent; for beauty is a witch " This is an example of belief of that Benedick believes. This affects the relationship between Benedick and Beatrice, since Beatrice is a woman.
The relationship between Hero and Claudio. The day Claudio met Hero. Claudio expresses his love as love at first sight. Yet Claudio was worried that might love towards Hero might not stay for ever. When Hero pretends to be dead. Claudio does not seem to really care that Hero is dead. So Claudio decides to go chase other girls.
Later when it is revealed that Hero did not actually die, Claudio went back to loving Hero. When Claudio finds sees Hero, he says "Look another hero". This can create conflict between them two since, it is showing that Claudio may not understand the full in-depth meaning of staying with one person. This can cause future problems towards their marriage and their trust towards each other.