history: I knew that when my best friend told me she would always be there for me, that I could have great confidence in her. She's always been a good listener in the past, and has never been anything but supportive when I've gone through rough times.
current: I used to worry that I would never have a long term friend who would be there to listen to me if I had problems, but my best friend Kayla has proved otherwise. 
next: Kayla sounds wonderful! How long have you guys been friends?