Also, i think she's worried she'd just be a third wheel.

另外 我想她是担心她会拖我们后腿。

I was, but it's their anniversary and I didn't want to be a third wheel, so I figured I'd come over here and hang out with you and Penny on your date.

本来是的。但这是人家周年纪念。我不想当电灯泡，所以就想着来这儿。参合你和佩妮的约会。

Cool, now I can be a third wheel on dinners with my crush. Oh wow, she's perfect, huh? You've never seen someone with better hair? Really, never? That's so funny. I object to this.

我想我现在可以当我爱人晚餐时的电灯泡了。喔，她真完美，是吧？你从没发现发型这么好看的人吧 ？真的没有？从来没有？太搞笑了！我才不相信。