Not to be confused with FWB is a totally different situation. Non-Boyfriends involve commitment on an emotional level as well, as opposed to the traditional f**k buddy... Perhaps non boyfriends can be the boy you wish you had? Perhaps a secret crush who doesn’t know you like them?
Non Boyfriend can also be a great title for someone in the case where you don't quite know where they fit in your life. You know you want them there, but you aren't exactly sure how they fit in the long term picture. Non Boyfriends are great for non-dates & non sex as well.
My non-boyfriend and I are taking a trip to Necker Island.