she overshares with BFF(about us )

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I am on the path of Getting back together with my ex-wife (3kids) as she has grown from her old ways that made us break up.

I just discovered that she shares every single thing we do and talk about i.e. when I am sad, when I disagree with her , when we have sex and how the sex was, how many times we have kissed in the day , how I discipline or talk to my kids , her toilet breaks(seriously ) , their periods, what I am wearing (including sneaky pictures of me), our arguments and how I am always the one in the wrong (calling me narcissistic, childish, etc) and when we were not together they used to say worst things , how she will not date anyone who looks like me (height , race etc)

I am very much put off and I don't want to tell her I don't like this oversharing because I found out through her WhatsApp(I was not made to read all this ) . She was showing me a message and pictures from her Best friend and I just scrolled up and saw their usual conversations , I couldn't help but to continue reading (I spend almost an hour at this as she just fell asleep and I regret it )

During one 4 years apart, this friend supported her going from man to man ,and many other bad decisions that affect my ex-wife to this day and she regrets it herself. I do not think this is a good friend which she agrees with all the time now but yet she still Overshares .

I am not the one to say Don't be friends with certain people but oversharing is a threat to my usual approach to relationships, I am very private and I believe couples should work out their issues without a 3rd part first.

I AM PUT OFF TRYING TO MAKE THIS RELATIONSHIP WORK NOW.

How can I tell her I am put off by this without exposing that I saw her messages . I just don't want to continue leading her on and this friend stays a part of this

Genuinely I couldn't be with someone like this
I had a friend who would tell me the Intimate details of her life and id just smile and nod because I don't actually GAF about her and her (now ex) H sex life. She started it back up again when she got a new partner and I thought absolutely cannot go through this again and told her I wasn't interested and I am sure her new partner wouldn't want this information shared either! She couldn't change so ive backed away completely from the friendship I hated that I knew some deeply personal things about this guy even when I was putting my fingers in my ears!!

She will never stop. Its pointless confronting her, hard as it is because 3dc id walk away

Run a fucking mile

You are right to say she will never stop . Best I stop this before it's too late and I regret it

She's an oversharer and she's not going to stop.

Is that a deal breaker for you or not?

I couldn't deal myself. I don't even like being the recipient and will call TMI.