I met my fiancé through his sister-in-law, who was a good friend of mine. She thought that my fiancé and I would be a perfect match but was also nervous that if things didn't work out between us, this could be problematic, as she felt our friendship would be a constant in her life. Things DID work out though... and I could tell early on that my fiancé was the one for me.
My fiancé and his brother (SIL/friend's husband) had their issues growing up, and when my fiancé and I started dating, my future brother-in-law even told me that I must not know my fiancé well if I thought I would want to marry him one day. My fiancé had no interest in directly addressing any of the tension that seemed to still exist between the two of them but they actually engage in almost daily contact now, so it seemed as though their relationship had improved.
When my fiancé and I first got engaged, my fiancé asked his brother to be his Best Man and my friend/future SIL was an obvious choice for a bridesmaid. However, I have since had major second thoughts about this. Rather than getting closer, we have grown further apart as we approach officially becoming family. She declines invites to spend time with me and essentially never extends an invite the other way, except for forced family time. I get a total weird vibe from her but she denies anything being up when I try to discuss how I feel. I suspect that my future BIL may still be harboring feelings about my fiancé but I don't feel it's my place to say something to him. What do I do? I'm completely anxious over this and would value feedback from fellow brides. My fiancé won't talk to his brother about any of this.