I don't know if they did kiss or maybe I temporarily became blind when I was reading that part (._.) but this is how I imagine it to be uvu

Krum swept Hermione up into the air and grinned as she giggled. "I have never seen a girl that vos as vunderful at dancing as you," he whispered. She blushed bright pink and turned away, but quickly turned back as she noticed Ron's red face looking like it was about to explode. Krum saw this a well, and grabbed her wrist, dancing their way out of the room. Tittering, they made their way to an empty classroom.

"Hermy-own," Krum began. "I must confess, you are vun of my favorite people."

"M-me too," Hermione murmered.

"So vood you like to — if you vood like — visit me in Bulgaria?"

"Viktor, yes!"

Hermione squealed and pecked his cheek, flushed. Krum, now completely pink, grabbed her shoulders and kissed her lightly on the lips. Hermione, ecstatic, threw her arms around him and kissed him back. Hermione, with a trembling smile, broke apart and saw Ginny peeking in.

"Ginny! That was a private moment!" Hermione squealed.

Ginny chortled. "I SHIP!" she called as she sped off.