不是这个意思. I'm perfect for you.表达的是, 我是你最好的选择, 或者, 我和你太扮配了.
而“我会对你最好”的英文翻译可以有几种：
1. I will treat you the best.
2. I will be the nicest person to you.
3.The person I will treat the best is you.
希望对你有帮助.