"Darling is not the one who makes you fall in love with his/her beauty, but the one who gives the chance for you to be yourself"
Could you check the sentence please?
Is 'Darling' the name of a person? The sentence sounds strange to me. It sounds a little less strange as "Darling is nottheone who makes you fall in love with their beauty, buttheone who gives you the chance to be yourself".
Context is always important; labelling is rarely important.
Your darling/sweetheart??