what is shakespeare actually suggesting about love in this play? is shakespeare undermining marriage here, by saying its not neccessarily in indicator of true love?

I think he is suggesting that love needs to be real and not mandated. Love needs to exist beyond rumour and innuendo. Certainly men like Claudio suffered from what my old English. Professor called a "Madonna/ whore" complex. Hero was either virginal and pure or the opposite. Shakespeare sought some middle ground between the sexes in a decidedly patriarchal world.

I think that shakesspeare in the the play swas trying to tell us how women where treated in the aspect of love and how the women where treated was represented by hero