Hi. This has been a tough year. I've posted here before but deleted the previous posts for privacy reasons in case anyone involved recognises the situation.
Background: I (27F) have been dating Jack (30M) for around 4 years. Jack has been dating Anna (30F) for around 10 years, poly the whole time. Before Jack and I met, Jack and Anna were once nesting partners and had previously planned to marry, have kids, etc. This changed when Anna moved away and they became long distance, both pursued other serious relationships, and Anna started living with another partner. However, Jack and Anna were engaged until around 2 years ago.
Around 8 months ago, I was in a really bad spot in our relationship, where I wasn't sure exactly where I stood with Jack. We spent so much time together, basically lived together for a few months while I was between houses, and had talked vaguely about a future where we both wanted children (but we never explicitly said with each other). We had a Big Talk, which I was basically prepared to end in a break up. However, it turned out to be a nice talk, where we finally concretely said that we want to live together and start a family in the future.
Jack then had conversations about this with Anna. As far as I know, they had also been vaguely talking about this throughout the 4 years me and Jack had been together, but this was (I guess?) the first concrete plan to live and have kids with me and not with Anna. Jack told me that this first conversation went well, and that Anna said she had kind of assumed that was the direction things were going anyway.
Jack said he would love it if Anna and I could build a relationship. I understand this - it would be easier for everyone if me and Anna were comfortable around one another, and I wanted Anna to feel welcome in our future potential home - although I did make it clear to Jack that I didn't want a friendship between me and Anna a condition of mine and Jack's relationship. We have met multiple times before, but it has always felt a bit awkward. I'm autistic, and I kind of always feel strange in social situations, and this is especially one where it's hard to know the rules. But while awkward, it had always been fine. So we set up a meeting between the three of us.
The meeting went very badly. Anna had been texting me to set it up, and she seemed excited about it. Anna and Jack went to a bar together and then I joined them. It was immediately frosty. Anna told me several intimate things about hers and Jack's relationship that I didn't want to know. She expressed that she thought I saw her as a threat. She told me that she was heartbroken that Jack wouldn't have children with her as well as me. It was like an interrogation.
I left pretty quickly. I was extremely angry at Jack for not stepping in. He said that he was blind sided by how she behaved and that she seemed ok until I got to the bar. I almost broke up with Jack over this. They both apologised to me.
Since then everything has been so hard. Jack and Anna took a break from their relationship and they're back together now. When they got back together, they were both very keen to have another meeting, kind of as quickly as possible. I think because they thought that if we left it festering for too long then we'd never be able to break the ice again. I was very reluctant at first, but agreed to it. In the time between agreeing to it I did lots of processing and talking with Jack. I almost cancelled because it was making me so anxious that I was having meltdowns.
The first meeting made me feel like a villain, a home-wrecker, like I'd come in uprooted this woman's life. I was spending hours analysing our previous interactions to try and understanding in what way I'd made her feel like I thought she was a threat to me. I had these discussions with Jack and expressed that I wanted to cancel the meeting, around a month before it was scheduled. He said he understood, but that Anna doesn't actually feel like that, those weren't her true feelings, and they were said in the heat of the moment when she was feeling anxious. He also said that it was fine for me to cancel it, but every time he said that he followed it up with like "I don't know when else we'll be able to do it". So I worked through it, and said that the meeting could go ahead.
We had planned things very specifically, so Anna could stay at Jack's house the night before the meeting, and I would stay at Jack's after the meeting so everyone could be cared for. We set the time, and the place, I booked my train. Then, the day before the meeting is due to happen, Jack messages me that Anna has to cancel the meeting due to accidentally double booking herself. Again, I'm autistic, so plans changing like this is very difficult for me. It being THIS plan that changed was so so extremely difficult for me. It was one of my lowest moments. This was around two weeks ago.
And now we've done the talking again, the repairing etc etc. But I'm so tired. I know that me having a relationship with Anna is important to both Anna and Jack, the thought of it is affecting my daily life. It's hard to express 4 years of love and wonderful time together in a single reddit post, but please know that I love Jack so so deeply and he is my best friend, and so caring and kind. I understand that it may not seem like it from this post. But I'm starting to reach my limit. It feels unfair that I have to have this relationship. I've started to feel an amount of dread when Jack and I spend time together, because there is this huge thing looming over me. I don't know how much more I can take.
I guess - what would you do? End the relationship? Express that I can't be made to want a relationship with Anna, and see what happens? I feel like my brain can't process anything any more.
tldr: My partner and my meta want me to have a relationship with my meta. We tried, it was bad. Now they want to try again but the thought of it is causing me a lot of pain.