The context of the following conversation is jan went to the same school for years so she was best friends with a girl.:
jan says Hey, did you know that Sasha and I have been best friends since we were in kindergarten?.
The friend responds No, I didn't know you had known her for so long..
jan responds Yes, we went to the same school for 13 years.  We met on the first day of school and became friends right away..
The friend responds That's amazing!  Most friends lose touch with each other after a few years..
jan responds Not us!  We were best friends through primary school and then high school, and we were even each others' bridesmaids at our weddings..
The friend responds That's really cool.  But personally I don't like Sasha at all. She seems sneaky to me..