It sounds like you have some insecurities within yourself.  Having these type of conversations with him will raise a concern, he chose and is with you and with these negatives assumptions from you will make a person think twice about being with you. How can you expect someone to want a relationship and love you when you don’t love yourself? Your’e living in self doubt. Search within and find why you are feeling like so? If because of past hurt relationships, you will have to take time out to get closure from your past and forgive and even so be honest with him so he can help work with you with trust issues.