He has been standoffish lately.

There's no hurry.
焦ることないよ。

Oh, really?
本当？

I'm glad to hear that.
それを聞いてうれしいよ。

I want to play cards.
トランプをしたいわ。

But if you keep too much distance from people, they might think you're being standoffish.
でも人との距離をあまり取りすぎると、相手はあなたのことをよそよそしいと思うかもしれませんよ。

He has been standoffish lately. 
彼は最近よそよそしい。

act standoffish
よそよそしくする

little standoffish at first
《be a ～》最初はちょっと素っ気ない態度を取る