You're Russia's best friend. He's not as closed off and blunt when he's around you as he genuinely enjoys your presence.
One day, you and Russia were walking through the park and you stopped to go look in the lake for fish. As you were peering over the side of the brook, you felt someone push you in. You landed in the water with a splash. Russia heard the noise and looked over to see that some drink guy had pushed you into the lake. Russia jumped into the lake after you and pulled you close. The water was deep and you didn't know how to swim so naturally, you fainted from shock and fear. When you woke up, you were in Russia's bed, wrapped in blankets. You rolled over in bed and noticed that Russia was cuddling you. He noticed that you were awake and tightened his grip on you. Russia: Are you okay!?