You shouldn't think of transgender people as freaks.
Dan is at a party when he is introduced to Lena who looks like a nice girl, when Dan is told by Lena that she's recently transitioned.
Dan wants to react to Lena's admission.
Dan tells Lena that he has learned that gender is fluid and that we are all different spectrum of woman and man.
Dan tells Lena that he thought she was pretty but now that he knows that Lena is a gross freak of nature he takes it back.
Lena feels supported by Dan's understanding and is happy she has someone to confide in.
Lena is in tears as she's being discriminated and hated on by an aggressive hateful person.