我的大亲爱还好有你在
[wŏ de dà qīn ài hái hăo yŏu nĭ zài]
This nickname 'Da Qinsi Hai Hao You Ni Zai' means 'my greatest love, you are still here.' This netizen probably values the person mentioned and uses this nickname to express appreciation for their presence. 'Da qin ai,' in Chinese affectionately means significant love or beloved.