Why did Justin Bieber write Maria?

JustinBieber was accused of having an affair with MariahYeater and gave birth to a baby boy. The situation took a turn for the worse. The woman's lawyer was suspicious of Bieber's DNA test results last week and asked for a face-to-face re-examination. On the surface, it was to verify the authenticity, but the media suspected that the prosecution knew it was wrong, so she took delaying tactics. Bieber, who knows his innocence, recently stepped out of the haze and reappeared his sunny smile with the support of his predecessors such as Arthur and David Letterman. Because she made a rumor that she was pregnant with Justin's child and invited her father to testify against Justin, it caused great concern at that time. Everyone criticizes or accuses Justin. This incident brought a great shadow to Justin, but he was not good at commenting on anything afterwards, so he wrote this song to express his anger and dissatisfaction.