Do You Love Yourself?
Before you can truly love someone else, you have to be able to say that you love yourself. Loving yourself doesn't mean that you have to love everything about your appearance but, it does mean that you have to accept yourself. If you can't make yourself happy then you will find it difficult to be part of someone's life as a spouse.
Ask your partner if they are concerned with any their feelings and if they are challenged with internal issues, how do they combat and overcome?