不着调但我爱你不靠谱但我疼你
[bù zhe diào dàn wŏ ài nĭ bù kào pŭ dàn wŏ téng nĭ]
This is a playful way to express that although the person might seem unreliable or unserious, they genuinely care and love. It combines humorous self-deprecation with sincere affection.