何必和你在一起我受伤了如果没在一起我开心过吗
[hé bì hé nĭ zài yī qĭ wŏ shòu shāng le rú guŏ méi zài yī qĭ wŏ kāi xīn guò ma]
'Why should we be together - I got hurt by it? Had we never been together, would I have been happier?' It suggests deep dissatisfaction and regret toward a relationship, indicating that being with someone hasn't made the person any happier, but has caused pain and injury.