So my best friend is getting married and so she has asked me personally to be her maid of honor or bridesmaid. Before she couldn't choose to pick between me and our other friend. I don't wanna be that friend and make them do anything but she asked me personally. Should I discuss this with her again?? Honest opinions

So my brother is getting married and he has asked my older sibling brother to be his best man, which is really great. However I haven't been given a part in the wedding and I feel a little hurt by it. I totally understand that it's their choice on who they have. She is having some other bridesmaids who are her friends and she doesn't have a sister. I am the only girl on my brothers side. I feel like if I wasn't asked than neither should of my brother, both my brothers was part of my wedding. Should I confront my brother about it? As I don't know whether I have done something to upset them both.