Ex moving on quickly and I suspect denying child

[touchdaqueef]

This will be long. I'll probably get slated. Sorry I just want to vent.
I'm just heartbroken. My ex has deleted every trace of his children from social media and I'm pretty sure has met someone new (we've been broken up for just over a week!).
He's been on tinder for ages. This is why we broke up.
He is quite what you could call narcissistic, won't diagnose him but he ticks every box. I don't think he can be alone so straight away found someone else.
We have a 1yo DS together, I also have 2 children from a previous relationship. He hasn't tried to contact me since we broke up Hasn't asked to see his son, or if he's ok, if he had a good Christmas. Just hasn't said a word. I honestly believe we won't hear from him again.
Towards the end of our relationship I found out just how much he'd lied to me about absolutely everything. He has another son, which I knew about. Not long after we got together he told me his ex was being cruel (obviously he says she's crazy bla bla the usual in these situations) she wouldn't let him see his DS and had moved away and didn't know where. I pleaded with him to go to her moms ask some questions, write her a letter, see a solicitor. I even printed out the paper work to take her to court. He did nothing I was furious and disgusted. But then shit, I was pregnant. Fuck.
He did not want a baby. He told me as much. I was prepared to go it alone. Then he changed his mind. I wasn't sure of him but I was lonely, desperate, scared. I have the lowest self esteem. I'm so ashamed that I've put up with this.
He hasn't spent a penny on the baby. He's my 3rd child so can't claim benefits. So it's a really big struggle. He left the hospital within an hour of him being born. While he was there he was on his phone planning a night out. It was a truly awful experience. He ruins everything special. Christmas, birthdays are always a big ordeal because he's not the centre of attention.
As you can see he's awful. I've been in a really bad place so I put up with way more than I ever should have.
I should be glad he's gone. Maybe if he never contacts us again it's for the best. I am glad he's gone. I really am.
So why am I so hurt that he just tossed me aside for someone else. I should be happy he's no longer my problem. And I'm so sure he will lie about having children.
I'm also convinced he's lied about the mother of his other child denying him contact.
I wish I could tell this new woman what he's like and to run before he destroys her too. I won't, hopefully she has a shred more self respect than I did and notices how horrible he is before it's too late.
I don't know what the point of posting is. I'm just hurt and don't know how to stop feeling so awful about finally getting rid of a horrible person who has done nothing but tear me down and go out of his way to destroy my self worth, because he's insecure and never deserved me.

You sound like you have a good understanding now of him and what he's like and what your relationship was based on. You just have to start really believing it and using your future without the bastard to develop your independent love and consequently your self worth. Obviously he is just a total scumbag but you know that!

How long were you together? From the way you posted it doesn’t sound like it was very long? My ex does this. Pretends he doesn’t have children... really he has 5 he’s openly admitted that he doesn’t tell anyone.

@pog100 I've been over thinking and evaluating every tiny thing that happened. I know it's good that he's gone, but feeling aren't quite as logical. He spent a lot of time making me jealous and insecure so it feels like the biggest punishment he could dish out. I wish I could move on from the situation as quickly as he has.
Thank you for replying to me I feel so desperate and alone. Self love is definitely what I need.

Perhaps it’s a good thing that you can have a fresh start and dc will have you, and not bother with that waste of space ex. What a prick.

@PumpkinP we were together 3 years. He spent the whole relationship looking for another. I'm mostly mad at myself for desperately clinging to him.
He isn't special in any way. He's a bit fat and going bald. He's broke, he got me into debt. He smokes weed and won't get a job.
He lied so much when we were first together. I thought he was motivated and creative and ambitious like I was. But he was just telling me what I wanted to hear, to make me think he's my perfect match. It's all so obvious now. Why was I so stupid. I just wish I could let go of the guilt and anger.
Why are these men so bad? What on earth possesses them? They can't be happy living this way and struggling to keep up with the lies.

Oh right I assumed it was a lot shorter than that! He will be back that’s what they do but I bet he will be in and out when he feels like it, It’s up to you if you let him

Please watch videos on YouTube on narcissistic behaviour, and how the hoover you back in, because like PP said this is very likely he will do. Get concelling for yourself and learn who you are and why you get with these types of men. I had to read uo on the abuse as it was so toxic and my ex was like yours, always looking for another woman. I am so much happier now he is gone for good and boy did he try and real his way back in, ha ha it felt so good saying no thanks.

@TheTickingTime thank you I will look today. I just wish it could be simple instead of games and lies. I can imagine how good it feels to finally tell him to fuck off and actually mean it.