从此我的幸福就有你来管
[cóng cĭ wŏ de xìng fú jiù yŏu nĭ lái guăn]
This means 'From now on, my happiness shall be managed by you'. It reflects an endearing pledge, handing responsibility of personal joy over into another’s hands. It indicates trust, love, and dependency on the partner for mutual well-being.