The definitions between a F*&K Buddy and FWB
a F*&k buddy is someone you only ever see to make a booty call any socialization outside of this this person then becomes a FWB..
An FWB is a person or persons that you have a social relationship with ie. you will go to the movies with,have a drink with,go out to dinner they also have the added benefit that occasionally you'll both jump into the sack together.

"Your born, You Live, You Die, given this premise, one can conclude since we have no control over when we are born and when we die, the only thing that matters to us should be how we live, simple really?" Mis-Cat to her philosophy Lecturer.