Hey everybody! FI and I have pretty much always known who would be in our WP. My cousin is my maid of honor, my sister will be a bridesmaid. His best friend will be his best man, and his brother will be a groomsman. Our mutual friend will be officiating (and that was about 10 minutes of laughter when we asked him-- then we said "No, but really, will you?" and he said "Oh! You're serious! Okay, yeah!" lol)Then, I have a brother and he has a sister. We're going to include them, too... but it seems that each of us is jittery over asking the other's sibling to be part of our WP. I know we could do mixed-gender, but we don't care to. I feel like this might be a good way to get to know his sister, anyway.But... how do I lead into that conversation? We've spoken a few times and she's been fairly polite to me. It's not like she a complete stranger, but I don't know her THAT well. I keep wanting to send an email or a text, but I feel like that's too impersonal. I don't want FI to ask his sister to be on my side, because I really DO want to ask... just not sure how to break the ice. What would you do?