Evening, I'll reply to individuals below, but first of all I'd just like to update on how I'm feeling. Surprisingly (!) I was left in charge of the kids today. Big one is quite independent so does their own thing, but little one wanted to go to a park and feed the ducks. We went to York, which is a nice city, but was one of the places I was worried about visiting.... My wife and I had our first proper date there almost 17 years ago, it's where our first kiss was and it's been a place we've spent many happy days, either walking along the river of visiting the city centre. I didn't know what I would feel visiting again after what has happened, but it's a demon I needed to confront. I needed to make sure that I would be ok in a place that was special to us without breaking down or finding it too overbearing emotionally.
The good news is I was fine, I had a really good day with my youngest and I've made new happy memories for a place I dreaded visiting again. It will always remind me of my wife, but it's not somewhere that will tug on the heartstrings.
@jackio2205
Again, thanks for the support. I don't think youngest is feeling anything really in terms of stress or worry. Per above, we had a really good day together and she went to bed shattered again. It was her mum's turn to take her to bed, but as us customary she demanded daddy! I'm sure my wife must be feeling hurt at the rejection, but it's been a vicious cycle for months now where they are drifting further apart (and of course I'm to blame!).
@palaver1
I know you are right, but I genuinely didn't imagine any if this. I was mostly happily married and thought my wife was too. It turns out she is a completely different person to the one I married and I know divorce is the right at forward. I wish it wasn't, but I can't change what she has done.
@hirooonoda
Lol "cocklodging" made me laugh 
Thank you for your support, if it appreciated. It's difficult to believe in yourself fully when you are in effect dumped for a younger model, but im getting there!
@notapizzaeater
I think that's the problem, I've never said no as I like been with my children. She has used my good nature against me and continues to try to do so. Prior to me finding out about her affair, she even got me to drop her at the station as she was running late after taking forever to get ready... turns out it was a night out with toyboy rather than the leaving do she told me it was for. I look back and see I've been such a naive idiot, but as ive said I trusted her 100%.
For all other things I've stopped been accommodating, but for my children I'd take them anyday if she has other plans. I don't think I could refuse the opportunity to look after and spend time with them.
@aweedropofsancerre
I don't want to tell my family and have the kids find out fully from someone other than their parents. Also, I was brought up in quite a emotionless and probably old fashioned family, so we tended not to do upset, hugging etc. We all loved each other but in a non-contact way, if that makes sense?! This probably stemmed from my grandma who was a lovely kind woman, but didnt show emotions (maybe a war time thing?). Off topic, but she was like one of the peter kay sketches... her neighbours were two really nice young women and when my grandma described them she could never say gay or lesbian couple, it was always a hushed mumble... If you've seen Peter Kay stand up you will know, if not you will have no idea what I'm on about! Anyway, I think I've preferred dealing with things on my own (and online) rather than been awkward with family. To be clear, I'm not like that with my kids and wife (well, not any more with wife), we have a normal huggy, kissy type scenario where emotions and love are normal. That been said, I'll definately have support from my family, just not the hugs etc.
@lollypop701
Per above, I really do get it that she is running to her time scales, but she says she won't tell the kids until she has a place sorted out. I asked again tonight for deadlines but she wouldn't tell me and got snappy saying she'll force me to sell the house rather than buy her out if I don't stop asking. I'm not prepared to tell the kids on my own. She needs to tell them and explain what is going on, all this is on her back.
@walkingdeadfangirl
I don't really talk to her any more. She tries to talk about random stuff but generally I ignore her.
Thanks for the pep talk regarding child access. I'm really in 2 minds about this. I want them to live with me, but that will result in a legal fight which would mean I'd have to sell the family home rather than buy her out. I just don't know what is best. I don't want them to have to live with her and toyboy, but I dont want them to lose their home either.
One light at the end if this bleak tunnel is that she met her mum today. Her mum tends to give her impartial advice without taking sides. She told my wife she couldn't expect to take oldest at all and as the youngest doesn't have any contact currently, my wife cannot just uproot her and expect 50:50 immediately. She told my wife it will have to be extremely gradual at a few hours initially, then 1 night per week up to 50:50. I'm not sure my wife will take this in, but it is sensible, and it does tie in with your comments. If things don't progress well, then I guess legal routeing may be the only way forward.