Sorry this has happened to you.
Go and see a solicitor whilst shes is running around with her new toy. Know what you are entitled too, get a free consultation with as many solicitors as you can. You can take the initiative whilst she’s on her ‘high’ from all the attention and materialistic things her lover can supply.
Don’t fall for any suggestion she may have to just settle things amicably without first seeing a solicitor and knowing what you are entitled too. My ex tried the sorting it out without legal advice and we got nowhere, I also suspect I would have lost a whole lot more had I not seen a solicitor.
Don’t be afraid to tell people what she’s done or ask people for help and support.
Don’t do the ‘pick me dance’
Don’t react to any provocation, try not to engage with her on an emotional level, don’t beg her to change her mind, understand what she’s doing. She’s in what some people call ‘affair fog’ the excitement is like a drug that fogs her sense of reality, I suspect your wondering what happened to the woman you married???
Read about ‘grey rock’. From now on be polite but formal. Don’t commit to anything with regards childcare, finances etc until you have spoken to a solicitor.
Go to this website and read about other people’s stories and post in the forum for help and support www.chumplady.com
I’m sure there’s a million other things I could tell you. I was where you were 5 years ago
You will get through this
Your daughter will be ok, remind her you love her and that rings will be ok
Don’t give up, even when things get low
Good luck op 