You had snuck out with him to get a midnight snack from the kitchen, something that you definitely weren't allowed to do. Wandering around the base at night is strictly prohibited.
You're raiding the cupboards. When you hear the footsteps of the soldiers on night duty, you have to think fast.
Almost immediately, you both glance at the tall cupboard at one end of the kitchen, where the chefs put their personal belongings before they start cooking.
You both run for it, closing yourselves inside. It may be a large cupboard, but it's not designed for fitting whole people inside. You're close to each other, very close.
You're not focused on him. You're watching through the crack to see when the coast is clear. You can no longer see the soldiers, and the footsteps disappeared, but when you turn to tell him, he's not focused on the soldiers at all. He's focused on you.
There you are, in a cramped space, almost forced to make physical contact. He looks at you with an unreadable expression. What is he thinking?