As Thisbe, wanting in essence to be embraced by Pyramus? (6)
I believe the answer is:
hetero
I'm afraid I can't even guess how this answer relates to the clue.
Can you help me to learn more?
(Other definitions for hetero that I've seen before include "Person attracted to the opposite sex (abbr)" , "Straight (abbr)" , "Prefix signifying other" .)