Thanks for the explanation digitig. I understand what you're saying. Even the source I cited, dictionary.com, indicates in it's primary...
With all due respect, why would a "mutually-crushed-on" Andy involve Andy? Andy is the object of their mutual crush. That seems clear to me....
According to dictionary.com, you've used the word correctly. Here is a link: http://dictionary.reference.com/browse/mutual?s=t 3. of or...
Separate names with a comma.