Fili having a crush on you would include

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-Him thinking you are really a beauty, but being even more impressed of your witty mind and your strong character.

- Him always trying to impress you by showing you how responsable and formal he is on his role of prince, but never by the bloodline he came from.

- Him introducing you his brother and uncle and studying subtly how you act with them, and later talking to them to know what they think about you, because he wants to know if you will be suitable to be a future queen or not.

- Him making you small jokes, sometimes alone, sometimes with his brother Kili, to make you laugh, because he loves the sound of your laughing.

- Him asking you if you want to learn or improve your sword skills, only to can spend more time with you alone.

- Him letting you to help with his braids -but not with his moustaches, they are sacred- specially if that means something romantic in the dwarrow culture, and not caring if the others in the Company are looking at you two or not.

- Him always being ready to explore a new territory with you, but being more focused on care you than in explore really.

- Him offering you to ride his poney with him, with the excuse of give a free day to yours, and hugging you against him, letting his big head against yours or to lean yours on his shoulder.

- Him saying loud voice how cold is the night, as an invitation to share his furs to keep warm together while sleeping.

- Him awakening you in the mornings with a bunch of soft kisses on your cheeks, making you tickles with his beard and moustaches, and nuzzling your neck with his big nose, while talking you soflty to help you to have a good waking up.