<human>: Give me a shortened version of the text

Actors

Friend: Trevor

Couple: Frank & Rachel

So my friend, Trevor - we've worked together for a while, 5-6 years, and gotten more friendly over the past year or so ... now hang out outside of work fairly regularly along with a larger group of coworker-friends.  Even more recently we have started chatting about topics of mutual interest ... sports, books, and psychology.  In some of this psychology talk, he brought up as an example a hypothetical relationship where the couple weren't really into each other anymore, but weren't breaking up because of the short term pain it would cause.  

Reddit, I'm pretty sure he's referring to a couple in our friend group.  From the outside it does seem like the two of them are not very close.  Trevor and Rachel hang out fairly often, never in an especially private way or whatever - other people are welcome, but one-on-one seems somewhat common. If I were Frank I might well be a little jealous/bothered (but as far as I can tell he is well aware of these hangouts).  This same hypothetical relationship situation has come up 5 or 6 times now in our conversations, and it's starting to make me uncomfortable. 

Should I address this with Trevor?  I think I'm on friendly terms with all 3 of them ... definitely have enjoyed these conversations, but now worrying that whatever I say in them could be used as conversational fuel for getting Frank & Rachel to break up.
<bot>: Pretty sure I recognize that friend is hinting at working to break up another friend-couple ... should I talk about it with him/them directly?  Don't really want to get pulled in ...