When is valalrie a love interest in Danny phantom?

Valerie Gray becomes a love interest for Danny Fenton in the animated series "Danny Phantom" during the later seasons. Initially introduced as a ghost hunter who sees Danny as an enemy, her feelings evolve as they share experiences and conflicts. In episodes like "The Ultimate Enemy," hints of romantic tension emerge, particularly as they face common foes. However, their relationship remains complex and often complicated by their opposing roles.