He had been writing down the lyrics while he thought of them and read through them quickly . He could n't help the bursts of laughter that bubbled up . It was the most lovesick thing he 'd ever seen , but he liked it .
According to the above context, choose the best option to answer the following question.
Question: What may be the reason for him laughing at himself ?
Options:
A. He is awful at writing .
B. He was proud of what he 'd written .
C. None of the above choices .
D. He does n't know what the song means .


B