Hello. I am the Mother of the Groom. I am not his Biological mother, but I am his MOM. My son has said that I will be the MOG in every aspect of the Wedding, but, I have a question. Since my husband and I will host the Rehearsal Dinner, what is proper on inviting his "mother"? His 16 year old half-brother will be in the Wedding party. Do we invite his "mother"? My son has a texting relationship with his mother. They are not close.