If you light a match and just hold it, one of two things will happen: It will either burn out quickly, and probably burn your finger, or it will be blown out by a slight breeze. I remember several times trying to light a barbecue, camp fire or t-shirt (that’s another story) while there was a breeze in the air. The match kept going out time and time again. It was VERY frustrating.
That same thing can happen with 'friends.' There are so-called friends that will be there through the good times, the fun and the easy-going life-style; but when you get in trouble, some rumors start to spread or there is work to be done; they are nowhere to be found.