我愿赌上青春和你一起
[wŏ yuàn dŭ shàng qīng chūn hé nĭ yī qĭ]
It means 'I am willing to stake my youth to be with you'. It shows a great willingness and readiness to commit oneself in relationship, even risking the best times of one's youth for a meaningful bond or pursuit of dreams together with others.