If they aren't there when you needed them, you don't need them ever. If you come to know they're backstabbers and backbiters they don't deserve you as a friend either.
In your case it's pretty evident he/she's just there when they need..
If they aren't there when you needed them, you don't need them ever. If you come to know they're backstabbers and backbiters they don't deserve you as a friend either.
In your case it's pretty evident he/she's just there when they need..