In Half-Blood Prince, after she casts the Bat-Bogey Hex on Zacharias Smith, Professor Slughorn respects her magical abilities enough to invite her to join his "Slug Club". Ginny becomes a permanent member of the Gryffindor Quidditch team as Chaser, and substitutes for Harry as Seeker when Snape puts him in detention during the Quidditch Cup final. After witnessing Ginny kissing Dean in an empty corridor, Harry has an angry internal reaction, which surprises him, and, upon reflection, he realises his attraction to Ginny. Since Ron vocally objects to Dean going out with his sister, Harry fears his reaction would be the same with him. Ginny's relationship with Dean ends altogether in April following an accidental nudge from Harry under the effects of Felix Felicis, which Ginny interprets as Dean unnecessarily trying to help her through the portrait hole.[34] Ginny and Harry share their first kiss after Gryffindor again wins the Quidditch Cup over Ravenclaw, thus initiating their relationship. After Dumbledore's death, however, Harry decides to end their relationship as he fears his love for Ginny would place her in danger.