I need help

I think it's time to find a solution to my pathetic problem

I don't want to get much into details
after I wanted to get back to my ex-girlfriend that I broke with, she ended up screwing me over for a guy that she knew for less than 3 months " I knew her since I was 13"
she acted interested in getting back together, when discussed the topic she chose security over love and by security I mean a guy who is 29 years foreigner who visited the country and already have a stable life, we ended up the conversation in good terms but I told her there is no chance we are getting back together.

Now here is my problem

first my ex thinks everything is okay but I am fucking angry over the whole situation and I feel didn't have a proper closure and she should know I am not okay with what she did .

I keep thinking of that bitch constantly , and shit is getting annoying

now I moved to A NEW COUNTRY , I am living on my own have a bright future ahead of me , in the past year and a half lost around 35kg and I am still improving

I have zero social life.
Back home I used to live in a small town everyone knew me ,liked me and I had a big social group I was considered a legend .
here having hard time to make friends as everyone is fucking shallow.


I am not a bad person, I speak 3 languages , I am funny, you could talk about any type of movies,music or politics and I could be able to hold a conversation.

but I am depressed for not having a big social circle like back home or having friends.

I closed all my social media accounts so I don't see pictures of my ex or any post because it gives me chest pain also I feel pathetic if I deleted her


I need help I feel about to lose my mind any day now


some of you might know who I am please keep it a secert