如果我不爱你了可惜没有如果了
[rú guŏ wŏ bù ài nĭ le kĕ xī méi yŏu rú guŏ le]
If I didn't love you anymore. Unfortunately, it is too late because this is what happens. It conveys the feeling of regret and the pain of losing someone he/she loves, wishing for an alternate outcome that cannot be.