You've got a sofabed, and two friends who don't know each other. In a normal house, if those friends were to stay the night, you would have two options: the pillow wall, or the head-to-foot.
Not with this fancy little number by Resource Furniture. The first sofa-bunk-bed i've ever seen, and quite good looking too.
(n.b. this does not apply if these friends have engaged in hand-holding, eye-lash batting, or flirting of any kind, in which case a normal sofa bed might be your best option)