The fun thing about a friendly relationship is the part where you get to know he\she and he\she gets to know you. So start out by telling them your favorite color or what type of music you're into. Then tell them your hobby. If you want to you can also tell them your family status, your age, your entire name, your relationship status, birthday & ect.
Example:
Favorite color: green or black
Type of music: country or rock
Hobby: reading, drawing, and collecting bells
Family status: parents are divorced
Age: 12
Full name: Briawna Paige McElwee
Relationship status: in a relationship
Birthday: April 18, 2003
School: United Lions
