So I (35 f) had a best friend H (28 f) we met through work about 6/7 years ago. We have a honestly became friends because we were such similar people and the workplace was a hell hole so needed people to get you through day to day. Anyway H got with (P unsure of age but older) shortly after I left that job and their relationship was very quickly on again/off again. They were toxic, they had to message each other constantly or they would argue and break up. She has always thought of him as the love of her life and honestly I've never seen it. He honestly couldn't care about her, he never made time for her or took an interest into any of her hobbies.
Everytime they we are in a good patch I would be ignored, messages left unread for long periods of time, any contact with her was ignored basically. If they were arguing or broken up then I would become everything, the only time I had to myself was sleep or work. I wasn't allowed to have my own life. If she wasn't messaging, she was on FaceTime, if she wasn't on FaceTime she was round at my house, it was a lot. Me and my partner (m 38) were always the ones picking up after the mess that was left, reassuring her and convincing her she could do better and getting her to a better place mentally. During this time her emotions were like a light switch, she'd be happy one minute, the next ripping our heads off over something really simple. Honestly she put a lot of strain on our relationship to the point where me and my partner argued a lot.
When H was broken up with P and I was working she was constantly on the phone to my partner, I also had concerns over whether she was interested in my partner as when she was at mine she would always find a way to be alone with my partner and was trying to find ways to be close with him. She would stay later so when my kids came home he would have to take her home alone (she doesn't drive). She would be up before us so she could have time alone with him in the morning before I get up. She would arrange to come round on a Friday lunchtime to have "lunch with me" but then spend the afternoon with him alone. I don't have concerns about him but her behavior was down right flirty sometimes towards him. Which again caused tension.
Anyway H broke up with P late last year sometime and I kept my distance this time. Helped her through it but she wasn't coming around as much, only communication was via message and FaceTime but again this was a lot. This time I told her was the last time and that if she got back with P then she was on her own and that I wasn't having anything to do with it. She promised this was the last time and that she wasn't going back as she realised how toxic it had been.
Anyway you guessed it and she dropped the bomb that she has decided to get back with him 2 days ago and that things weren't going to go back to how they were etc and that I can still talk to her and she won't ignore me. I informed her that I don't want to know and that I'm taking a step back as I can't actually trust a word that comes out about him from her. She said she wasn't happy with my decision but wanted to prove to me that this time was different and that she's happy (it had been 2 days). Told her she was making a big mistake and that I will still speak to her but the friendship will not be as it was. She left me an read, so I left it a few days as I did still want to be her friend but just wanted some distance from the toxicity.
Few days later messaged her to check she was OK and told her that she didn't need to ignore me as I still wanted to speak occasionally just not all day every day. Message sent but wasn't read, left it a day and a half as just thought she was busy but saw her commenting and reposting online so knew she just chose to ignore my message. That was the point I chose to block and delete, sent her a message basically saying thanks for showing me I was only ever a mug/convenience to her and basically saying this was the time to prove that things could be different this time but she chose to prove that I was right and I was being dropped as a mate because she had got back with him. I didn't wait for a message back I blocked and deleted on everything, she cannot contact me at all but I have had some comments off others saying it was a bit harsh.
So AITAH for blocking and deleting her?