我恨你但我不后悔爱过你
[wŏ hèn nĭ dàn wŏ bù hòu huĭ ài guò nĭ]
Expresses complex emotions including hatred and remorse over loving someone despite the pain it brought. However, it also conveys a strong sentiment where there's no regret in having loved this person regardless of any subsequent negative outcomes.