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: So me and my boyfriend have been together for almost a year. He broke up with his ex two years ago, after he cheated on her with me (it was a one time thing, not a long-term affair). I know, asshole move from both of us. It sucked, they split. After about a year, BF and I reconnected and decided to start over and date. We have been serious for almost a year now and are very happy. We don't live together, he has a apartment, that he shares with two roommates.

One of his roommates had planned a birthday party for this weekend. A couple of days ago she told my BF that she had invited his ex. He was pretty surprised, but apparently the roommate had kept it secret that she was still good friends with her (she is super non-confrontational and avoids uncomfortable talks if she can manage). She asked whether my BF had told her about our relationship and he said no. Neither had she (avoiding the unpleasant topic). So she told my boyfriend: "Then make sure that "dirtysecret" doesn't show up, I don't want any drama."

BF told her that he really didn't want to hang out with his ex to which she said:" Well, you could sort it out beforehand." He said, he wasn't interested and he would rather stay away that night after which she joked: "At least, you don't have to get a hotel, you can stay at "dirtysecret" 's house. "

Ever since then me and my boyfriend have been feeling pretty uncomfortable around his apartment. It feels like our relationship is some dirty secret that she has to hide from our friends. As the person, BF once cheated with, I am admittedly pretty sensitive about that. I know, it was a shitty thing to do but I feel like we moved past that. I don't want to her to make me feel like some slut that hangs around her apartment makes her friends uncomfortable by my sheer presence.

This is why I want this secrecy to stop. She made it clear that she doesn't want to bring it up to the ex (I personally would absolutely tell my friend something like that so she doesn't get in a really awkward situation if she finds out some other way) . My BF is not in contact with her anymore and doesn't want to contact her just to tell her this. So I wanted to do it. I told my boyfriend and asked him to give me her number. He was hesitant at first but then said: "Whatever, do what you think is right."

So I sent her a message yesterday. She just responded that she doesn't give a fuck and the conversation ended with that. But my boyfriend is upset now that I actually went through with it. He thinks, I should have waited until after the party. He fears, I might have ruined the evening for his roommate and now the mood in the apartment will be even worse. I just didn't want to be treated like the dirty secret any longer. I really don't think she will care after two years. The party isn't until tomorrow, so she has two days to get over it and neither me and my boyfriend will even be there to trigger any unpleasant situations. 

So AITA? 

telling my bfs ex that we're together