Growing up, I never got along with my mom's SO. So when my mom took a traveling job, and I was left to raise my younger sister (I was 20, and trying to finish college, she was 13 and acting out constantly), things became more strained. Over 5 years, he never offered a penny to help (much less any time or discipline or anything else), kicked us out of his house twice, and labeled me a "miserable failure" of a daughter when I had to drop out of college to pick up a second job to finish raising my sister. I haven't spoken to the man in years, and my mother is not married to him, but they are a couple. I absolutely do not want to see his face on our big day (and neither does my fiance), especially right up front where the immediate family sits (acknowledging him with the family that HAS supported me just chaps my...you know what).
Can I invite my mother with the explicit understanding that he is not to be there?