Sorry, I forgot to answer the Question! No, Free Love is never morally wrong. But Free Sex can be and often is morally wrong.
I agree with the people that wrote previously in that sex isn't the defining factor of free love. It's a way of expressing that love, but it shouldn't be what it is about, otherwise it isn't love. But you shouldn't be restricted to one person if you don't want to be, I think it's completely feasible to love more than one person.