"You will share one heart, if one feels sorrow the other will too, if one will suffer in pain or illness, the other will fall ill as well. Same thing with pleasure or happiness and etcetera." Malfoy tugged Hermione closer to him by her elbow, ignoring that they were not alone. "And I see that sharing the magic skills already came in handy. I wonder, Miss Granger, which poor creature suffered from your Cruciatus curse ?" That made both of them stop and look at their former Professor. Their expression not panicked but slightly alarmed. Have they missed something ?