用心酒伴牠无心
[yòng xīn jiŭ bàn tā wú xīn]
This username suggests a deep emotional contrast. 'Using heart' (用心) symbolizes sincerity and dedication in a relationship, while '酒伴' (drinking companion) refers to someone you drink with, usually implying less intimacy than a partner. '牠无心' means the other person acts without intention or care. So, this user might feel unrequited love or companionship that lacks true affection.