I think I'm kinda falling in love with you.

Mathilda: Leon, I think I'm kinda falling in love with you. It's the first time for me, you know?

Léon: How do you know it's love if you've never been in love before?

Mathilda: 'Cause I feel it.

Léon: Where?

Mathilda: In my stomach. It's all warm. I always had a knot there and now... it's gone.

Léon: Mathilda, I'm glad you don't have a stomach ache any more. I don't think it means anything.

Leon: The Professional (1994) by Luc Besson