How to Serenade Successfully

Well Boris is hot and his voice is hot, he has a hundred percent chance of getting laid. Unfortunately he's crushing on someone a bit slow, and you know what they said, your brain stops working when you fall in love. Well, here's the trick: pick the lady-killer song. Though, really, Boris? Serenade? Who do you think you are? AU. Randomness. Bit OOC.