It could be that he was lucky enough to inherit some special power or ability that sets him apart from other vampires in the Argeneau world. This power might help him in various situations, like fighting off enemies or winning the heart of a special someone. Another possibility is that he was in the right place at the right time to avoid some great disaster that was about to befall the vampire community.
Definitely not. 'The Lucky One' is purely fictional. It doesn't draw from real-life events or people. The story was designed to take readers or viewers on an imaginative journey.
Since I don't have more details, it could potentially be a story where someone overcomes great odds. For example, it could be about a person who was in a war and against all probabilities, they managed to come out alive and find happiness afterwards. It might detail their journey from a difficult and dangerous situation to a more positive and lucky one.
The amount you can quote lyrics in a story varies. Generally, fair use allows for a limited portion, but it's best to seek permission if it's a significant amount. Also, consider the purpose and context of the quote within the story.