My uncle and his wife divorced about 3 years ago. They have two kids together, now both in high school. They were together for about 15 years, so my aunt has been in my life since I was a young child. I barely remember her not being around. We never had a super close one-on-one relationship, but we have kept in touch. In the last three years, she has come to some family functions still for her kids sake because they took the divorce hard. She has two children from a previous marriage who are my age and a little bit older. We weren't too close as young kids, but became close my high school, right before the divorce (go figure!) They also have always been in my life, and one even kept living with his step dad for a few years after his mom left the house. They are the brothers to my cousins and their little sister is a bridesmaid who adores them. I feel like I especially should invite my two step cousins (or ex cousins? whatever they are...) because they did nothing wrong. But I also...