My fiancé and I are getting married in September and have some family drama to deal with from his parents. His parents are divorced and his father HATES his mother. I even changed my venue location because it was originally going to be at his house, because he would not let her come on to his property.
I want to invite her to our wedding because she is still his mother and she wants to be part of such an important event. My FI has not spoken to her in a long time because of his father and says he does not care if she is there or not, but I feel that he would regret that later in life.
The problem is she has gotten remarried and his father also has a significant other now. I know it is proper etiquette to invite spouses or S/O's, but I feel like inviting her new husband would be a touchy situation for his father, even though he has a new gf. Should I invite the S/O's or just his parents?