Sentry/Void, 69 words. 'Cause it's canon, yo!
"I hate you," the Sentry said to the face in the mirror.
"I love you," was the reply.
"You deform my existence," said the Sentry.
"You define my life," said the Void.
"You're the only one I want to kill," said the Sentry.
"You're the only one I could never bring myself to kill," said the Void.
"I love you," said the one.
"I hate you," said the other.