Love in Much Ado About Nothing is a complicated topic. None of the characters explicitly seek love. Love is always second to something else in this play. Love might be the inadvertent result of hatred, or the incidental fact of marriage. Though the play is a romance, the plot seems to highlight the fact that love is only one of many factors that goes into a love affair. Love often comes with difficulty or complication from outside circumstances (like a scheming villain), but it’s just as often thwarted by lovers themselves.
Claudio does not love Hero – his marriage to her is a mere formality, entirely performed in public and orchestrated through third parties.
Love in the play is incidental; the formal duty of marriage is more important.