All of what they've told me were true: You'll fall in love with a girl even before she falls in love with you. You might not realise it soon enough.
First, you'll fall in love with her smile. Then, you'll get to stare at her eyes and see more of her. Lastly, you'll hear her laugh and it'll be the most precious sound you'll ever hear.
Once you've felt one of those, there's no turning back.