URGENT - Did i make the right choice by breaking up (has he moved on already??)

ok so me and my (ex)bf of 2 years were having 'issues' and this guy went ahead and said 'we're done' and blocked me. shortly, a few hrs later, he requested to add me back by messaging on his cousins phone. it was right then, that i knew that he wasnt rlly worth my time, and im not his dog on a leash, just accepting him with open arms. So i ended it there.
there were SOOOO many other things to but its so long and i cba to explain. so basically to say, our relationship was cooked anyways.
Now, after breaking up with him, he went and added back the girl that i rlly didnt like, purely bc we had some issues in the past where she kept flirting with him, so i asked him to block her. He did so without a question.
however, as soon as we broke up, he added this girl back. Now, a lot of people know that is girl means trouble, and does not have any self respect for herself. was my ex bf rlly that desperate to go and add her back? was that really the right thing to do? During our relationship, me and him had some 'secrets' that we didnt want anyone to know. we both agreed that no matter what happens, we would take that shi to the grave and never tell anyone about it. no matter how ****ed we are, no matter what happens.
guess what he chose to do? it hasn't even been a day of breaking up and he goes and tells this girl everything. and i mean everything. and she's known for spreading things and gossiping, so with no doubt she is definitely going to go and blab to everyone who knows me.
Some people might say that he's trying to make me jealous, by talking to this girl, however i think personally this was the most immoral thing to do. I also looked at this girl's phone, and the first thing he messages her is 'YES I CAN FINALLY TELL U ****' This is implying that he always wanted to speak to this girl, but i was stopping him. Seeing this really made my heart break. He can't just add this girl back and tell her things about me, things he was meant to keep to himself, especially if he knows i dont like her one bit? also, i know for sure he doesnt like her, as he has said the most vile things about her during our relationship. so why did he suddenly add her back and tell her everything? and i know he still loves me because its only been a day since we broke up. so what does this mean?
as soon as i heard about what he had did, because the girl asked me about it, i was so angry. i was raging. i texted him, after like a day of not talking btw, and i told him that the stuff he did was absolutely horrible, and considering he 'loved me', he shouldnt do that at all. even if im mad at him, not one moment would i think to go and tell everyone all his secrets and things ab his personal life. He ddint even bother to apologise, and brushed it off by saying 'sorry it accidentally slipped out.' was this accidental, or did he purposely do this?
I blocked him straight after. And i had no intention to ever speak to him again.
However, I really miss him and i dont know whether im starting to regret my actions. He also said he had no intention of coming back to me, after i told him he had just lost me for good. which also hurt me very deeply, as it makes me feel worthless.
how do i move on from this situation? and will he ever regret what he did?
if he comes back, should i let him back into my life after what he did to me?

Girl what no. I mean I get your situation but this is just plain snakey of the guy. NONE of what he did was an 'accident' if you saw the messages he sent. Ofc you're going to miss him, but it's more likely that you don't actually miss him you just miss what you were. And from what you've said now, he will probably never treat you like he did during the good times you both had.
Basically, he isn't worth your time at all and is quite frankly disgusting for telling basically a random girl the most personal things about you.

yeahhh i think you're right about the fact i miss what we used to be, not him. And i feel like he lost me anyways. he lost someone who rlly cared ab him.
well right now i dont care and he really isnt worth thinking about if he's gonna bait me out like this. thank you sm!! how am i supposed to move on now though?

Read your first paragraph. You have both ended your relationship and you have no right to manage his life in terms of what he will or will not do.
Do you really want to be with a man who acts like this? Why set the bar so low for your own expectations?
Stop the communications. Leave the relationship in the past and look forward to finding someone better. Do not look back.
You are worth so much more than one guy who has no compass for his own behaviour. Get out and stay out. You are causing a lot of the aggravation here. Walk away.

You said your relationship was cooked before this happened. Remind yourself why.
It's normal to feel longing and regret after a break up...but that's only because we're use to them being in our life's everyday. You have to get use to your new normal even if it feels crappy.
As for the drama...leave it alone, stop looking on social media, stop participating in the gossip, if anyone brings it up- stop them in their tracks and tell them youre trying to move on....otherwise your healing process will be painful and longer than it has to be. Block people and/or temporarily deactivate social media so you don't have to see updates from them.

yeah, this is so true. but i cant help but wishing that he would want me back, but to me, he seems just fine without me. I feel so mad, how could he just throw me away like that? Do you think he will start to regret his actions later?

The way he moved on quick, she was in his life even before the break up. Would you take him back?

nah i wouldnt

He will never respect you if you do.
She will always be apart of the equation because he will know he can get away with it.
We've all had that sucky guy that we broke up with and wondered why he doesn't care, why doesn't he miss me, how can he move on so fast ? And we are now happier and know we made a good decision. You'll realize it after this normal grieving phase is done.
You'll get passed all these negative thoughts. Cry it out. But have dignity, don't show him and her that you're hurting.

yeahh ur so right. I hope he understands what he missed out on tho, because that girl is a proper and utter BEG for attention. she'll ditch him straight away. and i no longer consider her my friend anyways. She's always going on about being a 'girl's girl' but the rule for girl code is that you should never ever go for ur friend's ex. Its liek shes indirectly saying 'you lost him, so technically i can hit on him now.' its like she was waiting for the day for us to break up.
If her ex bf tried to talk crap ab her to me, id immediately block him, or tell him to stop. This is how i know they are both perfect for eachother, and neither of them are gonna be able to do any better. his ego is so fking high that he keeps telling everyone 'idc ab her anyways' and he even said shi like 'yo if i get back w her then hit me' and hearing stuff like that makes me wanna acc rip his hair out. who gave him permission to say that about me?
so yeah i think im gonna have to acc man up and move on from this situation now. he can have the other girl if he wants to, and she can have him. as long as i know, that im better than both of them, thats all that matters

true. but at least i have him blocked on everything now. so im never gonna add him back