Chris raised his hand. He was actually very afraid of the power of love potions. "Professor if the brewer wants to make a person fall in love for them for a long time all they have to do is continue to give it to them. Like in the case with Lord Voldemort's mother. She continued to give Tom Riddle Sr. Love potion all the time until she thought he loved her back. But when you stop giving the person the potion, after the appropriate time they will lose all affections given by the potion and will return to normal." Chris ended it with a shiver.