Mr. Darcy and Elizabeth Bennet from Pride and Prejudice by Jane Austen. I know they were in love by the end, but I would imagine they still had their standoffs as a married couple.
This is fan art. I do not claim to be the creator of this character. Just the drawing.
You can check Twitter (@mseregon)
and Tumblr www.tumblr.com/blog/mseregon
for works in progress.