If Leo's are so compatible with fire and air signs...?

one thing i know for sure is hilary clinton is on the cusp of libra and linda hogan is on the cusp of leo, so that may have helped in them being more compatible.....i'm a leo and my best relationships are with fire and air...never an earth sign...water has only worked for me in friendships also. i like this post though....i have wondered the same thing.