As far as what you should be feelimg, there is no answer. There is no set way you "should" be feeling. You feel what you feel and that is perectly fine for you. I am going through something similar and have been told that my feelings and actions are unexpected. But what you feel is what you feel.

I'm assuming when you say separation, that he has moved out. So, you have asked him to stop informing you about his personal life, yet he still calls and texts? Your kids are old enough to communicate with him directly, so if I was in your position, I'd probably just block him from the cell. My ex did something similar during our divorce, where he'd make up some B.S. excuse to call me at my desk at work from a number I wouldn't recognize on the caller ID, knowing I'd pick up. Since there was no purpose for his call, I felt it was just to control me and make sure I was thinking of him. I asked the office manager to change my number. I'm just offering this as background info, that blocking worked in my case. I'm not sure what your STBX's motivations are, but since it is early in the separation, he might be trying to keep his options open by dating someone and staying close to you at the same time, while trying to make you jealous. If you file for divorce now, you can limit all communication to being between the lawyers, or if you don't file now, you can just limit communication to emails regarding the division of property. The less contact, the better. That is my advice for moving forward, and your emotions sound pretty much like what I went through.

ugh, that is hard. no matter how much you feel you moved on, it still is a stab. Mine has done that too and happy for him and I don't want him back but it still hurts.

What a dick, oops sorry did I say that out loud? Geese where are these men losing their marbles. You would think he would do his best to be a good ex husband/father instead of worrying about his pecker.
Why not wait a few years for the youngest to be 18 then date? really selfish and I hope you take the high road and at least you know your decision to leave is right.
Divorce is a sleeper and it hits the kids when they are 30. I hope they get good counseling too. I did that with my kids when I left their alcoholic (pedophile found out later) bum of a Dad. I have 2 kids in their late 20's and they both have a good head on their shoulder and no relationship with the Dad obviously

TIme is on your side WHN big hug to you and your kids

Any tips on moving forward...?

Yes, quit obsessing about your ex and his life and start focusing on you and your life.

Thanks everyone! Yes he’s moved out but as we have a mortgage together and a property to sell, it’s hard to block him completely. Ive told him I don’t want any info on his Gf and I want our contact to be property related only.
In AUS we have to wait 12 months after separation before you can divorce, so I have to wait until Feb before I can make it official.
Kids contact him directly but as he didn’t have a great relationship with them they really don’t try hard to contact him...which he then asks me to intervene. I know it’s early days into our separation and I’m coming to this page to vent but I’m sure counselling will be helpful soon.
Xx
P.S Obsessing? Lol hardly! I’m just finding it hard to comprehend that the man who told me I was his ‘life’ be able to move on with someone else 3 weeks after he moved out of our home.

If he's still reaching out too much, you can still block him from your cell phone and ask him to email only. I suggest working out a schedule for when he'll see the kids, and you can email that once a week and ignore him the rest of the time.

It was my experience that when my ex found someone new and realized I really wanted the divorce, things actually progressed faster. My divorce finalized more quickly than most people I know. Now is the time for you to take advantage of the situation, and figure out what you want out of the settlement. Maybe ask for a tiny bit more than what is fair, and he might just agree to it, because he's distracted by this other woman.

Sounds like he's purposefully trying to stick it to you, telling you how much better his life is after you decided to end it. Who knows how truthful he is being, anyway. Do your best to ignore it. If he starts talking personal, remind him that all conversations need to revolve around the kids and the house and the divorce. Don't let anything personal come into a conversation, shut it down if it does.

At 15 & 17, the kids can initiate their own interactions with their dad. If he wants a relationship with them, your role is mostly to not interfere. You can encourage it but he's the one who will have to win them over and earn their trust/respect/love (whatever he hasn't earned yet). If they want space from him, then they should have it.

My boys were 15 & 17 when I filed, so I know a little about this. Too bad about the one year wait period, that bites.

I would like to think he isnt doing it deliberately but the more I talk to people, it sounds like he is. I can’t understand how it’s so easy to move on with someone else so quickly...! I’ve been reading up on it and apparently it’s not uncommon for men to do this.
Anyways, I’m definately keeping the contact only in regards to our property and me and the kids go on holidays tomorrow (to Bali) so it will be nice to escape from it all.
The kids are doing well so far and contacting him (somewhat sporadically) direct which is great!
12 month period is to ensure that you have tried all reasonable attempts to reconcile....
Hope you and your boys are doing well!

I agree, not uncommon for men. Enjoy your trip!