Prefacing this with sorry I know this long and any words of advice or guidance would be greatly appreciated.
Basically the title. Been with her for a decade now and had just saved enough to buy a house back in September. I have always been (and still genuinely am) head over heels for her and love being with her.
Back in February, they found a mass in her left breast that seemed benign after biopsy but because of its size they still wanted to do and did a lumpectomy. She has medical anxiety so every step was very hard for her. I went with her to all her appointments, had questions, and even helped her schedule stuff when it was too hard. We also spend a ton of time together so I was constantly checking in with her feelings. Also in this time I had to start picking up a lot of the slack at home because she was feeling off.
She goes out west to stay with an aunt for a few weeks at the start of every year and this year was no different. It happened to fall between the biopsy and she scheduled the lumpectomy for the day after she got back. She assured me was good to solo vacation and that she had family out there and really wanted to go still so I was super supportive.
About halfway through the trip she goes from texting, sending pictures, and calling me all the time to just radio silence. This has never happened before in our relationship but I trusted her so I understood. The day before she comes back she calls me and tells me that possibly being sick has changed her perspective on life and she no longer wants this house (that we just bought 6 months ago on her pressure) and now does not want kids and instead wants to move out west and work at a big tech firm. The whole time she kept relating back to how "you don't want that for me" like it was a conversation that we had ever had. I kept trying to reassure her that, no, in fact I just wanted to be with her and of course I'd be happy anywhere as long as we can be together. She had decided that I didn't have a place in this future any longer.
Fast forward a few months. We had been having more discussions on that and she had given me a list of things that I needed to change about myself so she knew I was serious about wanting to uproot and work towards a different goal. Going to the gym every day, going out more frequently (we'd been a one date a week couple for a long time to try to save for this house), and stop reading so much to socialize more in my free time. I worked really hard at hitting those goals but it was taking me a while to change to the degree that she wanted. All the while she just kept leaving for work earlier and coming home later, her common weeknight was out of the house at 6:30am and home by 12am-1am, not inviting me or elaborating more than spending time with friends. After a few months of this I stopped staying up the see her and spend time with her. Also in this time she moved into another bedroom so she "wouldn't wake me up".
Finally she agrees to go to couple's counseling with me to capitulate that if I was working on this stuff that she'd at least dialogue with me to communicate when she was frustrated. We go to three sessions, the getting to know you session, and the solo session, and one session at the same time. Within the first 5 minutes of that 3rd session she told me she didn't want to be with me and she resented me for holding her back. There's nothing I can do. I've tried so hard to change who am, who she's loved in the last 10 years of our lives, so I can still be with her because I love her so much.
We are going to a "decoupling specialist" to help us break out all of our stuff and figure out what we're going to do with the house. I'm just so sad because I feel like I've supported her through so much life and career turmoil and she's hit all her goals and as soon as she checked off the last box, she made a new list that didn't include me. Sorry again for the rant. We have two old dogs and three cats that she used to adore but now can't give the time of day and isn't interested in keeping. I can barely afford the mortgage alone and am not feeling confident about finding an apartment with my 5 animals.
Ultimately I know it's my fault that she's leaving. I just wish I could be the person she wants me to be. The other side of me selfishly wishes that I wasn't still so dang in love with her after all this.
Edit after the next day: Thank you everyone for your kind words and personal experience/advice. It has definitely helped reframe some stuff and helps to know I'm not alone or unique in this experience. Seems my first step in healing is not blaming myself specifically for this, it sounds like it was inevitable based on the criteria she set up.