<human>: Can you provide a brief rundown of the text in within 3 sentences?

So I need some unbiased advice from some fellow brides to be. 

I am planning on having two bridesmaids in my wedding, my sister and my best friend. My sister just recently got remarried and I was her maid of honor for both weddings, so I just automatically asked her to be my MOH. I talked to her first and asked her first about it. My sister and I have had a on and off relationship, but recent events over the last few years have made us close even though we don't live near each other. 

When I called to talk to my best friend about being a bridesmaid (she doesn't live near me anymore either), she was very excited about it since we used to live together and we have been planning my wedding since I first started dating my FH over three years ago. We are super close and she has helped me through a lot of stuff over the years and she is close to my FH. 

Now here comes the sticky part, my BFF asked me if she was going to be the MOH and when I told her that I had already asked my sister she wasn't very happy about it. She feels that she has been a bigger support for me in regards to my relationship with my FH and that she knows me way better than my sister. She even told me that she already has her MOH speech done. 

I talked to my sister about it and she told me that it was fine if I demoted her, she would understand, but I heard a world of hurt in her voice when she said it. 

I feel like I have been put in a tough position and that either way I will be hurting someone's feelings. 

I have currently told them that I am not choosing right now. 

I am hoping that weddit may be able to shed some unbiased advice on the subject as everyone I talked to, FH included, is biased one way or the other.
<bot>: I asked my sister to be my MOH and now my best friend is upset that I only asked her to be my bridesmaid.