Okay so my fiancé and I have been so excited to start planning our wedding. He has younger siblings in to which I have had disagreements with one. She has always had a big mouth and talked behind my back about us. I let go after. Anyways, my point for this post is to get some advice. So it turns out she got married without telling him and he is very upset about it because they were close. And now he has thought about not including them in our wedding. So should I include them or no? Or are we taking things too far?