Get help immediately!  You might think that the accusation against you is so silly that you have nothing to worry about.  This is a huge mistake in the "Me Too" and "safe space" age.  The system is not fair and the accusations against you are serious and need to be investigate quickly and carefully by someone on your side.  DO NOT TALK TO ANYONE UNTIL YOU HAVE OBTAINED AN ATTORNEY OR A TRUSTED ADVISOR.  Sexual misconduct cases are often referred to law-enforcement agencies for investigation and prosecution and anything you say to anyone may be used against you.  Preserve all evidence including text messages and social media posts.  Do not post anything about the accuser, the incident or the investigation.