Good morning, Emy.
When we dream of other people, it usually represents some aspect of ourselves, instead. At this point in your life, you may feel as if you don't have a best friend - outside influences have removed the opportunity for you to socialize on this level. The bomb in the toilet is a particularly nasty piece of sabotage - in a place where you expect service (a restaurant), instead this happens.
I believe that you are feeling abandoned and betrayed recently, not by your friends, but possibly by business partners. At this point, you need a friend outside of this particular sphere - a confidante, even if they cannot do anything about the situation, at least gives us someone we can talk to.