Perhaps your past is very bad,!!!
What causes people to like you, even fall in love? Maybe that's a side you can not see. Someone can see something you can not see from yourself. And indeed, we can not judge ourselves well.
Perhaps your past is very bad, but it does not matter to him. It may be that your skin is dull and dark, but to him it does not matter. It may not be your intelligence, but it does not matter to him.