Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: I(34F) was with my ex(32M) for 11 years and lived with him for the majority of that time. We broke up more or less a year ago. It was an extremely amicable break up (initiated by me, but was one he clearly also wanted and we had near-breakup talks leading up to it some of which initiated by him). We're still really good friends, and both really happy about that, especially since we have nearly all the same friends and the main group we hang out with is equally both of our friends who we've each hung out with for the last 12+ years.

Recently, I started having a friends-with-benefits kind of relationship with one of these friends. We've decided not to broadcast it for non-ex related reasons, so very few of our friends know.

Now, I know my ex really well and we have really open and honest communication. I *know* how he would feel about this, and am sure he would not be upset. I've dated a bit since we broke up, he was completely fine with it. He's definitely of the opinion that once people break up that they don't really owe anything to each other in regards to who they date. He's also specifically said that he would be fine with me dating mutual friends. It isn't him I'm worried about.

But some of our friends tend to still treat us like we're a couple. It's been a year since we broke up so I'm annoyed with it, but I also kind of get it. The people I dated since never got to a very serious point, and he's not dated anyone since AFAIK so no one has had much exposure to us being in relationships with others. We'll often go to parties together because I don't have a car, I live in the neighbouring apartment complex to him and everyone else lives rather far so it makes sense for him to drive me and he wants to. Yesterday, we went out for dinner with 4 of our friends, two sets of couples and then us. When it came time for the bills, a waitress came over and asked how we wanted to divide the bills and one of the friends gestured and explained a desire to split the bill into three bills, lumping me and ex together. I had to jump in and explain that me and ex would be separate. There have been other subtle hints of stuff like this from this friend and a few others.

Since then I've gotten increasingly worried that if people found out about the friends-with-benefits thing, they might be angry on exes behalf, and even if he didn't care they might think he is just not sticking up for himself. Remember, they don't really have the context that I have that says that he'd be fine with it or that I knew previous to starting this thing that he'd be fine with it. I'm known to be a good person in the group, and haven't ever done anything that anyone thought was wrong before, so I'm hoping that reputation holds up.

If you were my friends, would you think IATA?

being fwb with a mutual friend of an ex if the ex is fine with it