Sharing a bed

Sam and Tyler are in the same room now since our trip to Utah, they loved it so much that they begged us to let them share a room. But what we found to be happening was that in the middle of the night, Tyler would find his way to the foot of Sam's bed and fall asleep there for hours until we moved him back to his own bed. To solve this, we put the beds into a bunk bed formation and, at least for now, Tyler has not figured out how to climb up the ladder into Sam's bed.