We have the opposite problem. How do we get our kids to not want to share the same room/bed?
We adopted them from Russia last year and our son (7) always wants to sleep with his sister (6). He gets afraid in his own room. I think it's the whole thing that they slept in such close quarters, albeit their own beds when they were in the orphanage and they never had a chance to sleep in their own rooms. As it is in Russia, the kids sleep co-ed until the September in which they reach 7. At that point, they are moved to another orphanage for school and the children are devided by sex for sleeping.
We've tried everything and he gets brave for a night or two and then goes back to her room. This completely freaks out my DH and he wants each in their own room. It doesn't bother me as much because I know that they will get to a point that it isn't cool to sleep together, so they'll find their way to their own rooms.
We've tried telling him how brave he is... how proud we are of him... we've explained how if he has a bad dream it's because he was sleeping on the wrong side of the pillow and he needs to flip it over to the "good" side... On his brave nights, his sister puts on a pout because she doesn't want to see him go.
Now, as I write this, I must admit that he has slept in his own room for two nights in a row. Will tonight be the third??? Last night, he gave us a hard time, but the whole, "we'll be so proud of you" thing worked.
Do I think we'll get a hard time when they sleep on the pull out couch in our BWV studio????? No way.
My DH & I used to think that we'd each take a kid to sleep with, especially if we got two double beds, but we tried that on our first overnight trip with the kids and both of them thrash around so much that we didn't sleep, so we'll come up with other alternatives as time goes by.