lose your heartlose (your) heart (to someone/something)
to fall in love.
I lost my heart to airplanes when I was eight years old, and I've wanted to be a pilot ever since.
lose (one's) heart to (someone)
To fall in love or become smitten with someone. She lost her heart to the tall, handsome man the minute they met.
lose your heart
LITERARY
If you lose your heart to someone, you fall in love with them. Note: The heart is traditionally regarded as the centre of the emotions. She falls in love with Raul, who in turn has lost his heart to Silvia.
lose your ˈheart (to somebody/something)
(formal) fall in love (with somebody/something): I’ve quite lost my heart to those little kittens of yours. Can we take one home?