I'm not going to attend my cousin's wedding
Why wouldn't you attend their wedding?
I don't have a good relationship with them and they invited 10 people for this stupid wedding.
You should be there for your cousin. You should attend their wedding since it's important to them. They would want you to be there.
Well I've made my decision, I'm not going to attend the wedding. It's their loss since I'm the one who actually cares about them.
At the end of the day it's your decision, I just think it's rude to not attend a family member's wedding.