I have never read any 文章 about their friendship. But I think that for sure they were in very good relations. They were meeting each other on different kind of parties, took pictures together, I think they weren't so close like 阿丽雅 with Missy 或者 Timbaland, but I know that they admired each other and respect too.
On the picture 你 see that nobody pushed them to take this photo, they really like each other, and I'm sending also a video where Lisa talks about Aaliyah...
link
