My fiancé and I are getting married in January 2020 so writing the guest list and starting to plan everything out now. Only problem is, neither of us get on with my brothers girlfriend! They have been together a year, and she practically moved in within a couple of months, had her own key cut and all. She has always been disrespectful towards me, and recently when my fiancé and I stayed at my mum’s while she was on holiday, she made us both feel so unwelcome, not once did she say a word to me, my fiancé or my stepdaughter. My brother doesn’t see that she does any wrong to us, and will always take her side in any argument/dispute and won’t hear a single bad word against her. I have so much dislike for this girl, and really don’t want her at my wedding because I feel it will affect my day, but I don’t want my brother not to come because of it! What do I do!?