I'm pretty sure Draco liked it when Hermione got tortured, he always gave me that vibe he didn't give a crap about her and I thought when she was getting tortured he would like it
Hermione. He was just mean to Harry because he turned him down. He was actually excited to meet the ‘chosen one’ and was really happy to become his friend. But, Harry refused so Draco went out of his way to mock and taunt him.