I'm sure if he's with you that it's because he wants to be. When he says he thinks you're beautiful, believe him. Sometimes we're can't see the good in ourselves because of years of listening to those voices (maybe your mother's voice too) that tell us that we aren't good enough. I've know so many other women who couldn't see how beautiful they were. Sometimes it takes an outside perspective. Don't know if that helps at all but there's my 2 cents.