Their rosy cheeks not only add a blushing component, but due to the fact that almost all else is pale blue/cool tones it gives the whole picture a feeling of being cold. The heart used as a light in the lamp is a cute touch. The background pattern and cast shadow are effective in giving them a space to stand in, as apposed to just floating in nowhere.
"He's your brother?" "Yes, what did you think he was?" I say confused. Stephan leans in fast and kisses me on the lips. I pull away. "What was that?" My mind is spinning, I'm surprised I even replied. "It was a kiss." He leans in again. I stay still and let him kiss me, even though I could have pulled away again instead.