I and my sister have the same lunch.
我和我的妹妹在同一个地方吃午饭。

But I and my friends had a big fight earlier that day so I didn't want to sit with them.
可是吃午饭之前我刚和朋友们大吵了一家，所以我不想和他们同坐一桌吃饭。

So I went and just sat a table that didn't have anyone there.
于是我走到另一张餐桌前坐下，那儿没有任何同伴。

Then my sister came over and said "hey bud want to come sit with me and my friends?"
我的妹妹走过来对我说：“嘿伙计，你想过来跟我和朋友们坐在一起吗？”

I told her no I'm fine so instead of leaving and going back with her friends she just sat there with me.
我告诉她，不用了，我很好。妹妹却没有转身走开，回去和朋友们坐在一起，而是在桌边坐下陪着我。

I thought it was cute and I wanted to share it with you.
我觉得这是一个很暖心的故事，所以我想把它分享给你们。