有你疼狠幸福有你爱狠满足
[yŏu nĭ téng hĕn xìng fú yŏu nĭ ài hĕn măn zú]
With a play on Chinese phonetics and characters, this translates roughly to 'Feeling intensely happy when hurt by you and feeling immensely content when loved by you.' It implies the depth of emotions experienced within a relationship, including both pain and joy.