By your definition, a human getting with an elf is also bestiality.
well that depends, is an elf pure human? difficult eh?
While he may want to be "intimate" with a Cat like being, that implies Beastiality
While getting freakeh with an elf is somewhere in between ( like the first time you date a Foreign person, that kind of feeling)
so after much debate ==> Dating an elf would be considered rather erotic