他心是海我溺深海
[tā xīn shì hăi wŏ nì shēn hăi]
It expresses that another person's heart is compared to vast and deep oceans ('海'—Hǎi) while stating that oneself has drowned in its depths. This could mean several metaphorical senses, usually referring to being entirely engrossed in or emotionally dependent on someone else whose thoughts and feelings seem so complicated yet irresistible as endless water.