Peggy -- the relationship is young and this wasn't 'some posts'. This was everything she posted.
I have had the experience of living in an abusive relationship where I found myself isolated and living with a man whose response to any problems in the relationship I brought up was ugly.. Your if I was having problems I would resolve it myself by speaking to my partner - I certainly wouldn't be posting any intimate details of my relationship online with a load of strangers who know nothing about either of us pov sounds like the sort of thing someone who has no conception of life with an abuser would say. Lucky you.
Should I have accepted my exH's refusal to talk to consellors and just sat home waiting for him to change, or is it ok to seek advice wherever it is available, free, and instantly? I went to group sessions run by my local women's shelter. I talked plenty. And I have posted here in the aftermath. So slap me.
Part of what keeps abused women in a domestic prison is silence and fear of talking. Your pov is a recipe for disaster in relationships where someone is being abused. Silence? Respect for the privacy of the abusing partner? No way.
This man did what he did with no regard for the assumption of privacy that comes with use of fake names, and the very clear message to snoopers in RL that a username is not meant to be used by anyone but its chooser (on any site) that comes with fake names. This is not just in the case of MN. You can't go onto someone's online banking or email account, or any other account they have. Either you respect the convention or you are a person who should be dumped.
When you encounter a site where registered users have usernames and passwords you are crossing all sorts of lines when you use that site as if you were the owner of that username.
Someone who does that has no regard for website conventions, or thinks they don't apply when it's your partner. Imo this man is not relationship material.