What exactly does that expression mean, friends with benefits? Does he provide her with health insurance?

互利朋友到底互利在哪里了？他为她提供健康保险了？

On the contrary, you no longer get to enjoy my charming eccentricities. We're not friends with benefits.

那你就错了，你现在没资格享受我可爱的小怪癖。我们不再是有" 福利" 的朋友。

There could be many mechanisms working together that drive us in choosing genetically similar friends rather than " functional kinship" of being friends with benefits!

会有许多协力起作用的机制，这些机制促使我们选择那些基因上相似的朋友，而非“功能性亲属关系”——因为利益而做朋友！

I mean, are we friends with benefits?

我是说 我们是互惠朋友吗？

This is more than friends with benefits.

我们绝不是炮友这么简单。

If you wanna have a relationships, friends with benefits, nobody can say you can't.

如果你想拥有一份关系， 有利益的朋友，没有人能说你不能。

Why are you freaking out? - We're friends with benefits.

你怕什么 -我们是炮友。