If our love and affection is true and real, we only saw the positives of the person and forget about the negatives. But blind trust don't help us to gain any thing, it is our duty to change the negatives of our beloved person and make them as positive, don't support their faults, try your maximum to change the faults as merits and negatives as positive. If your love is true and real, you have the ability to change the person.
There is nothing wrong in finding the fault from our beloved one and change it as a good thing, so don't refuse to see the faults, find it and remove it and guide them in a good way.