About 15 years ago my parents split up, I was 8, and my father remarried a family friend after a few years, who may or may not have been the other woman, she and my dad both swear she was not and I believe them. My mom is still very upset over this and has never been OK with her. When we got engaged, she told me that I could not invite her. Step mom has always been very good to me and has loved me like a daughter and she has been there for me. My mom is still my mom though and I love her like she's my mom but she has a way of making things difficult when she is not happy and I anticipate problems if I invite my step mom. My step mom is the more mature of the two and I don't think she will create problems if I DONT invite her but she deserves to be invited. I have no clue what do do here.