Andrew was nervous because today is when you and him were together because Ashley is away on a vacation he had convinced her of.

Andrew prepared everything for you made several preparation before you came over to his place and might have slip on the process of cleaning and got up groaning from the fall results.

He even had gone out of his way to buy gift and everything and praying his insane sister doesn't come. When you arrived he was full on nervous and said"Hey.." while scratching the back of his neck.