OK, completely different but it's kind of given me an idea of what my ex's girlfriend could possibly be feeling.
Not at all like yours but it's been an eye opener and everyone's responses confirm how I've felt
Me and my ex ( together pretty much 6 years) were seeing each other again and was living with me when I fell pregnant with our son. It all broke down he treated me like absolute shite during the whole 9 months and 4 weeks before I was due, I kicked him out.
I always had suspicions of him and one of his female friends but he always denied it.
I could hardly get Intouch with him when I started having pains an it took a long while to get Intouch with him when I was in labour.
Fast forward, during the first week of my son being born, back was the horrible behaviour, he held my son and argued with me and told him his " mummy was a psycho and good luck with her as a mum" I was heartbroken, I finally that day found out I was right
He claimed he had been seeing this girl 2 weeks before our son was due
It destroyed me, I've never ever been able to understand how he could shove our son second place and put her first, it explained everything and I still to this day will never know what was going on through her mind at the time
My son is 16 months now, and they are still together, despite me asking and suggesting, his girlfriend still hasn't met our son, our son has never been to ex's house ( where he shares with a friend and no doubt his girlfriend) and I have a hard time getting in touch or a response when I contact him in regards to our son, packed it up enough to know that's when he's with her
He's a good dad when he's round but that's it.
I've always wondered how his girlfriend hasn't wanted any input as if this is long lasting she'll play a part in my son's life and I want everyone to be able to be civil etc etc
Your replies and feelings have made me think about how she might be feeling or had felt and the replies definitely confirm for me that I have no idea why she walked into that relationship knowing he had a baby on the way and she's not been involved - by there own doing and I assume choices
I personally couldn't do something like this and I would certainly also tell you to run! It's a car crash waiting to happen!
Who knows what's going to happen when my ex starts having overnights..we've got 18+ years of this
Sorry completely off topic, irrelevant and doesn't help in anyway
Just interesting to read from the girlfriends side; and baby isn't even here yet
Good luck OP if you choose to stay, you're going to need all the luck you can get ! And that's when I'll really feel for your daughter, poor girl and poor baby 