Contract!

Emmy thought for a moment, Although she was allowed to decide the time for herself she was put in a hard spot... 

"Am giving you a year," Given that he was going to help her so much and there wasn't a prince she could repay him with she couldn't be so stingy and give him little time. 

She was the biggest beneficiary actually, she was so confident he wouldn't be able to make her fall in love at that time. And he had to keep his part of the deal. 

She was the winner at the end of it all! 

He smiled at her words, "Okay that's more than enough, You're already mesmerized by me, it's only a matter of time and my input to make you fall for me, Second, you're an angel making a deal with a demon am more cunning than you." 

Emmy brushed, It was true his presence here was making her think of weird things, and wild fantasies were filling up her head.