That was a very undignified sound that only got halfway muffled by the kiss. In spite of all the obvious vibes, Bobby was surprised by the suddenness and he had no idea how to handle it. Yet he didn't pull away or push Aleister backwards. Instead, after the first few moments, his mind caught on to the fact that he was kissing back. Enthusiastically. He hadn't kissed anyone in years, yet apparently it was like riding a bike.