FWB很多人直接翻译为PY是不准确的，应该译为有暧昧关系的朋友更为恰当，而我们通常说的PY则是F** buddies。打个不恰当的比喻，PY好比是你在球场上遇到的球友，一起玩但基本只在球场见面，FWB是你和你的朋友都爱打球，便约定偶尔去球场一起打球。
有部电影叫Friendswith benefits,
男女主人公最终在一起了。但现实生活中，人们反应，这种关系最大的问题就是一方爱上另一方，而另一方并没有决定将关系推进，结果连朋友都做不成了。这种关系可以被视作介于朋友与恋人之间的关系，其尺度实际上是很难把握的。不过也许有人就喜欢这种走在悬崖边上的感觉。
1. The main difference is the friends part.
友谊第一
The biggest
difference between friends with benefits and f*ck buddies is that you’re
not friends with your f*ck buddy. Friends with benefits obviously means
you were friends first, right? Right. Friends with benefits usually
begins when two friends, close or not, either have a random, drunk
hookup or just start a mutual flirtation that builds into hooking up.
The main point here is that you were friends first. You guys have things
in common; you hang out casually outside of the bedroom with other
friends, you know at least a moderate amount about each other. On the
contrary, with fuck buddies, there is no interaction besides the sex.
Fuck buddies usually begins with a one night stand or a tinder match
that evolves into an agreement on “sex only.” Fuck buddies don’t know
each other’s majors, don’t care about what you think about Jenny, and
will never see you outside of the bedroom. Well, they might see you at a
bar or party, but will probably ignore you and end up texting you 20
minutes later asking to leave to fuck.
2. There’s way more at stake with friends with benefits.压力山大
When
you start getting involved with friends with benefits, there’s a lot
more at stake than fuck buddies. More than likely, your guys’ mutual
friends will catch the wind that you’re hooking up, and will either be
weirded out, or try and pressure you guys to turn into a relationship.
This will put a lot more pressure on the situation than either of you
probably intended, and it makes things more complicated than just sex
with a friend. Not to mention, if something goes wrong, you’re basically
doomed. Think about it, your friendship is ruined, and it will probably
make things awkward for your mutual friends, too. You’ll end up
thinking that the 7 or 8 casual hook-ups weren’t worth screwing up your
friendship like this. In comparison, there’s practically nothing at
stake with f*ck buddies. You don’t owe each other anything, and there’s
no strings or relational dynamics tying you to one another. So, if
something goes terribly wrong, or you’re simply not into it anymore, you
can walk away and not have a mess to clean up