I really dislike my fiance's brother's girlfriend.

Agree with all the above... but the bigger picture is to hold off asking anyone for a few months. Really think about who you want to stand by your side on your wedding day. Who I thought I would ask to be in my bridal party changed several times in my early planning stages and I'm glad I only have one matron of honor. Keeps it simple!

There is NO reason to ask her. Don't ask anyone you don't want by your side!

Don't ask anyone "out of obligation"

Don't ask her! This is YOUR day! FH asks his VIP, while you ask yours

My FBIL's wife isn't apart of the bridal party. I never thought to even ask her and I actually really like her. Don't feel obligated to add anyone to your bridal party.

1. You have time to pick bridesmaids. Trust me, don't ask them super early.

2. Just because your FH is planning on asking his brother to be his best man doesn't mean you have to ask her to be a bridesmaid. If that was the case, then I should have asked FH's wife to be a bridesmaid which I of course did not. She's not obligated to be in the wedding. Now, if they are still together when it gets closer to your wedding, she does get invited with him.

There's no law that says you have to ask any relation or potential relation to be in your wedding. I didn't ask my sister to be a BM because we don't get along. It was one of the best decisions I made for my wedding.

You're not obligated to make anyone a BM! Especially someone you don't really care for. Invite her to the wedding but, do not ask her to be in the wedding party.

A bridesmaid is not a position given to people whom you feel obligated to include. It is meant to be an honor for the people you are closest to. I see a lot of posts about this topic on here whether a bride should include so and so because they're family, or FHs family, or a long lost friend. You are not required to include people just because they're family or because they're close to FH. Choose people that you couldn't imagine spending your day without.

I literally have the exact same situation and she has absolutely nothing to do with my wedding. There's no reason why she should

You don't need her to be a BM. She can come as a guest.

I think you should only as people that are your best friends that you want standing by your side. I don't think you should feel obligated to ask your FBIL's girlfriend. They aren't even married. Even if they were, I don't think you should be required to ask but it may make me think harder about it.

Definitely don't ask her. My fiance's brother got married a few months ago. I get along ok with his wife but we aren't close. His brother will be in the BP but I didn't even consider putting his wife in it. I was having a hard enough time narrowing down my close friends. You are not obligated at all. Choose your friends.

Nope don't have her as a bridesmaid!!! Just invited as a guest. She is you BILs girlfriend not your sister!!! I didn't have either of my DHs sisters or his Sil in my BP, his brother was as groomsman that was it, one of his sisters did a reading, another lit the remorial candle. His Sil did not have a role. DHs sister has since gotten married and neither of us were involved. It should be those closest to you.

My fiance was recently the BM in his brothers wedding. I was a guest. I was totally fine with that and no one in the family was upset over her decision of bridesmaids. I think you're good not to ask her.

Invite her to the wedding but she doesn't have to be a bridesmaids.

There's no rule that you have to ask her. Just invite her as a guest.

Agree w PPs. You aren't obligated to ask her to be a BM. And if she isn't a fan of yours either, why would you?

Definitely not obligated, and I wouldn't ask her to be honest. If you want to extend the olive branch, allow her and FMIL to get ready with you and your girls (hair and makeup) if they are interested.

I did not ask any of my FH's GM's gfs/wives to be in my party. I asked people who I was close with.

Do not ask her! the last thing you want to deal with is someone you don't like in your BP and if the feeling is mutual she probably doesn't want to be in it. Just have her as a guest.