A Sibling Bed?

Both Alex and Sebastien have separate beds (both double or queen sized in case we have guests :D ) although they both go through periods of wanting to sleep in the same bed. For a month or so Alex (who was going to bed later than Sebastien) would insist on dragging her pillow and quilt into his bed. That was until he vomited in the middle of the night - she wasn't really affected - and so she decided it might be safer to sleep in her own bed...just in case. When Sebastien was sick recently with the latest in viruses, he insisted on spending his (prolonged) quiet time nap in his sister's bed - she was at school. When she was shown the picture, she informed Mummy that this was ok so long as he didn't vomit in her bed.