You're great/terrific.
你好棒/好厉害。
I admire you.
我佩服你。
You're really cool.
你真酷。
You're amazing.
你真了不起。
You did a great job.
你做得很好。
You really impress me.
你令我印象深刻。
You mean the world to me.
你对我来说是最重要的。
My heart belongs to you.
我的心属于你。
You take my breath away.
你让我忘记呼吸。