You are, and have always been, the only one for me.

你是而且一直都是我惟一的爱。

youdao

Because I know in my heart, you're the only one for me.

因为在心中我很明白：你就是我唯一的爱。

youdao

Because I know in my heart, you are the only one for me.

因为我很清楚在我的心坎里只有你的存在。

youdao

I'm the only one who can get my kidney stones removed for me.

只有我能经历我体内的肾结石被去除。

耶鲁公开课 - 死亡课程节选

Once I knew Manchester United were in for me there was only one place for me.

BBC: SPORT | Football | My Club | Man Utd | Rooney's ruthless edge

There was only one problem: No one was cheering for me.

FORBES: Personalization Goes Beyond the Name Game

But the icing on the cake for me is that this one and only decent Occupy idea is a profoundly conservative one, relying as it does on those little platoons.

FORBES: Links 10 Nov: Finally, An Occupy Wall Street Idea We Can All Get Behind, The Rolling Jubilee