If someone or something grows on you, you like him, her, or it more and more than you did at first: I wasn't sure about this album when I bought it, but it's really grown on me.

What does it mean it grows on you?

: to become more appealing to (someone) as time passes Try the drink again—it grows on you. I didn't like him at first, but he's starting to grow on me.

What does it mean to grow up on someone?

to become increasingly liked or enjoyed by someone: Living in a small town was tough at first, but the place grows on you.