(((Hug)))
The first thing you need to hear is that you WILL be ok. Try to believe it, because you will be. Promise.
Of course it’ll be very hard and it’s a dreadful thing to go through, but you WILL be ok. 🌷
You need to prepare yourself for finding out he’s involved with someone else. Men very, very, rarely leave until there’s someone else to pick up the pieces. They’re often introduced, very quickly, as the ‘new girlfriend’.
Anyway, he’s at his Mum’s. She can mother him, YOU have 3 actual children who need you and, of course, your own feelings to deal with.
He was a TOTAL arse to dump it on his children like that. He should have discussed with you what to say to them, then told them at the weekend. Not dumping ‘I’m not happy’ on them randomly one night in the week then fucking off.
Take a practical approach.
Tell a few close friends & your family if they’re supportive. If they’re not, don’t feel obliged to tell them too soon. You don’t need their crap as well.
House - owned or rented? In whose name?
Practical arrangements if you need to change childcare arrangements/school drop offs etc. People will help if you ask.
Benefits/tax credits/cms - don’t delay, get onto it because it takes ages.
Be ANGRY, he’s deserted you and left you with everything to sort out while he (st best) gets looked after by mummy or (as I suspect) is freeing himself of responsibility because he’s seeing someone else.
You WILL be ok 💐