Sharing Our Innermost Thoughts

Hello. I have a best friend, we met in high school, and have been very close since then. It’s been like that for the four years of our college lives (different colleges). And a looot of things have happened during this time.
So this bestie of mine has a lot of issues to deal with, she also suffers from PCOS, and many other issues. And she had a rough time last year, so the whole year, I’ve more or less, been like a therapist to her. Always gave her a shoulder, always listened to her problems. At times, it made me really upset that she was never emotionally available when I needed her. But then, I went with it because it was her, who was having a worse time than I. But once I confronted her, and things turned out really hurtful, she attacked me for not understanding her, I attacked her for not understanding me, and so on.
After a couple of weeks, we apologized to each other, and things got better. I and her went on a trip together, with our boyfriends, it was all fun.
Now things are better in her life, I’d not say ideal, but better. And she’s in a good space and a better mental state.
And I share her happiness, and I’m very happy for her. Also, when good things happened in her life, I thought it’s good for me too, as I’d finally get my bff’s emotional availability.
But, no, that’s not what happened. It almost feels like she’s not interested in my life. She barely texts me, replies after hours. I don’t feel like sharing things/ feelings anymore because she either doesn’t listen to what I’m saying patiently (or so it feels), or doesn’t remember at all. She’s very self absorbed. And it’s having a negative impact on me.
When we’re in person, she is really good with me. Although, it’s different when her boyfriend is around. But I know she loves me, I know she cares about me, etc. She tells me that she does. But, it just doesn’t feel that way you know?
Meanwhile, I still continue to listen to her feelings patiently, and reply sensibly and empathetically, to this day.

And at this point, I don’t know if I’m being too judgemental, or being too self absorbed myself!
I know I can’t confront her about this again. Bcuz we’ve been through this, and the last time, she told me she’d never want to lose me.
Maybe I’m the attention seeker, I really don’t know. But these feelings, are real. And I’m just putting up with them, with her. But then eventually I forget it, and try to share, but I get hit with the same kind of response again!
I’m tired. And don’t know what to do.
Is it me? Is it my expectations? Please, somebody tell me what you feel about this.

Thank you so much for taking time to read my rant.