Who is Rafe?

When Grace is crying in the boy's bathroom after punching Adam, Rafe walks in and comforts her throughout it. He even tells her that Adam is a jerk, without really knowing who he is. Rafe works at Whisked Away, and Grace meets him again while returning some items purchased by her mother. Rafe is supportive and nonjudgmental of Grace and they become quick friends. Grace visits him at work and they often have lunch or frozen yogurt together.