I've never been one for romance, but this image really captures my imagination. The symbolism and expression is very well done, from the woman's flowing hair and dress to the orc's harsher lines and rough edges. Their faces are genuine and full of emotion. The orc's face in particular is very well done; I imagine it must be difficult to try and capture such a face with such inhuman proportions. The backdrop is beautiful as well, but I may be biased by my own love for Draenor/Outland.
I can only think of two ways to improve this image:
(1) The woman's leg shadows in her dress seem a bit oddly proportioned around the knee area.
(2) I wish the backdrop were as detailed as the characters themselves are.