This is a brain teaser and somewhat like a survey to a case study: If you were forced to pick between your best friend OR your boyfriend/girlfriend, who would you choose? It's take it or leave it. You cannot pick both, only one and you'd have to severe all ties with whoever you chose to leave. Of course there are definitely reasons for such drastic measures, just imagine what kind it could be - it's your call.
Pls don't forget to mention whether you're single or in a relationship. It matters^^