Relationships between people in these positions have less or no sibling experience with the opposite sex growing up, so they do not understand the other easily. Also, their ranks in their sibling configurations were the same. The oldests will be expecting the other to follow and may be shocked when it does not happen. The youngests will be looking for leadership that neither knows how to take. Though they may have a more difficult time of it, they can still have a stable and satisfying relationship though they may have to work at it.
