Believe me, he isn't as happy as you think he is.
My ex-partner, whom I loved very much. Left after 3 years, I now think he monkey branched onto someone new. As he was with someone else really quickly, which hurt like hell as he left me, and I didn't want that ending. I didn't have children with him, yet I do with my ex-husband.
He tried coming back to me months later, saying the other woman wasn't very nice,
I've had abuse and threats from her as she found out he was at mine (uninvited by me, he just turned up). She even called the police, saying I was in contact with him and she didn't want that, yet the police spoke to him and he said no, I went to see my ex. Then she sends me a message Stay the hell away from her man, or she will ruin my life (I have a good career, and she doesn't). I just thought Don't need this drama in my life, I'll stay well away.
The other woman then sends me a holiday photo of them somewhere tropical, a few months after I saw him last. I cried my eyes out, thinking she was having the best life with him. She looked awful in the photo, yet it hurt like hell and was bloody nasty sending it too, spiteful in fact.
Along with her telling me they are trying for a baby, and he never had one with me. I'm 45 and have two teenagers, I don't ever want any more ever, and neither does he. He even used to say he would rather jump off a cliff than have any more children.
I take my daughter to a sports match 2 weeks after I received the holiday photo, and I accidentally see the woman getting on the bus with her weekly shop. laughed my head off as I have a nice car.
Then the next week, my ex's bank statement turned up at my house. He's up to his eyeballs in debt, and the bank has suspended his main bank account. When he had no debt at all when we were together, in fact, he hates having no money.
Now roll on this week, I've made some new friends, and one knows the woman's ex-husband, and their daughter has told her dad that my ex and the woman he's now with do nothing but argue!
I like that you have really struggled with that ending. I haven't met anyone else and feel incredibly hurt, yet knowing he's got a worse life than we had does make me feel a tiny bit of karmic justice.
You've seen one photo, and you think his life is great, yet the reality will be very different, especially when the sparkle fades and he's been with her a while, and it gets mundane and real life happens.
I deleted all social media when my ex ended on purpose so I couldn't look at his, and I haven't since, so getting sent photos when I purposely closed off my life to not want to know, shows how petty and vindictive the other woman is.
I'm just glad I am me and not her,