我深知你爱他
[wŏ shēn zhī nĭ ài tā]
This name indicates a sad realization that the other person loves someone else. There's a sense of pain because while 'I' fully understand your love for 'him', I might not reciprocate it in the same way or may not be able to compete with 'him'. It can imply hidden love or an unspoken understanding.