At that moment, Hazel doesn't want to think of any excuses anymore or any potential issues that would hinder her from having a relationship with James.
So what if James was already flirting when she was just learning to walk? James surely had his first girlfriend when she was just in preschool. It was just in the past, and James was not dating anyone in the present.
Hazel threw her arms around James' slender waist and buried her face in his chest. It was what she wanted to do when she was upset and James didn't disappoint her; he wrapped his arms around her body.
She has been dreaming that James will hold her like this until she cools down and feels better.
And after a long moment, that had passed. Hazel slowly releases herself from James. Suddenly, she felt shy about what she did. She was the one who threw herself into James's arms when there was no clarification between them yet about whether they were officially in a relationship.