Nightmare had been taking a few classes on potion making recently, and was recently given an assignment to make a potion and test it on someone. He didn't have to turn it in, he just needed to make sure it worked. He decided to make a love potion, which he left on the kitchen counter next to the fridge.

You walked into the kitchen, looking for something to drink. You looked over and saw the bottle, though it looked like the bottle for strawberry milk. You drank it as Nightmare walked in.