But they were going out together for only a month.

但他们在一起才一个月。

We are going out together to find her.

我们一起出去寻找她。

Especially if we're going out together.

特别是如果我们一起出去。

He thought of them going out together in the morning and coming home at night.

他想到他们早上一起出去， 晚上一起回家。

They’ve been going out together for a long time now.

【now】他们至今已交往很长时间了。

We’ve been going out together for five years, off and on.

【off】我们时断时续地谈恋爱有五年了。

How long have you been going out together?

【go】你们俩交往有多长时间了？

He and Cho were now too embarrassed to look at each other, let alone talk to each other; what if Ron and Hermione started going out together, then split up?

他和秋现在尴尬得不能看对方或是单独互相交谈；如果罗恩和赫敏开始交往又分手那会变成什么样？