Am I the Asshole?

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The original was posted on /r/AmItheAsshole by /u/Classic_Lab4793 on 2023-07-05 04:01:35+00:00.

28m. My ex is also 28 and has a 2yo daughter (not mine). I've been with my wife for 6 years now and we are currently awaiting the arrival of our first born. She's due in 3 weeks. My wife admittedly hates this ex, with good reason. My ex went psycho when I moved on. But after a year, things died down and we both forgot the other existed.

Now, I want to mention that I had nothing but good intentions here. My wife was at her mom's for the day, baby shower planning. She was supposed to be home late. Around 8pm I go to the store and I saw my ex on the sidewalk with her 2yo. I ask her what's going on. She basically tells me her baby daddy kicked her and the kid out and her phone was dead so she couldn't call anyone and said she had no money so she couldn't get a hotel or food. I bought her and her kid food and told them to get in. However, money is tight right now so I couldn't spend money on a hotel for her either.

Anyways, I get home and set my ex up in the living room with her kid and cartoons. I then go call my wife and ask where she is and give her the run down and she immediately lost it completely. Told me she wouldn't be coming back, that I fucked up and she will never forgive me, that I should have either minded my business or "played hero" by calling someone, not by bringing her home with me. Said I was basically dead to her and she would only be contacting me to tell me when my kid is born. I've talked to people about this (I ended up bringing ex to her mom's around 3am, when she was able to get a hold of her) and everyone is 50/50. Some think I was right to not leave a kid on the street and others say that I'm a fucking idiot and that I'd be lucky to be forgiven.

ETA: this is the one person my wife has asked me not to have anything to do with. Given the nature of what my ex did when she found out I was seeing my now wife. So this isn't my wife showing her "true colors". It's the one person she hates, so I get it, but there was a child involved.