my parents are divorced. at first it was really, really difficult, especially if you don't fully understand why, like was the case for me. i was younger, so i had go talk to family counselors and stuff, that drilled me with questions about my parents so they could decide who i lived with.
now that i'm used to it, though, i wouldn't go back and change anything. for one, my parents are almost certainly happier this way, since they obviously weren't getting along. plus, it really contributed to who i am.. my life and circumstances growing up would have been alooooot different had they not gotten a divorce. i wouldn't have gone to go the middle/high school that i did, had the friends i did, etc, etc.
i guess what i'm trying to say is that while it's definitely going to seem fucked up, and it's going to be hard to get used to, just hang in there and try to look at the positive side, and keep in mind that they are just going to be living seperately now, but nothing else really changes. they still love and care about you and your sister, and things'll work out.