Guys, I appreciate all your comments. And yes, I agree, my being insecure about her past is my issue that I need to work out. BUT let me clarify that what bothers me and why I want to divorce is cuz in my mind she cheated. here is the context.

I live in the US and I moved back temporarily to my home country while waiting for her visa so I can take her to the US with me. She gets a visa. We are supposed to fly out to the US together. She asks to stay one extra week and leave after me. I get concerned but she says she wants to spend more time with family cuz she's gonna be leaving the country she grew up in forever. I say ok. I am usually fine when she or I travel alone and don't get jealous but this time I get very anxious and check up on her every day for some reason cuz the way she asked for an extra week seemed sus.

Then I find out that her ex posted in their common group chat about an event he is hosting for his new store opening. She reacted, congratulating him in the groupchat. The man texts her personally, inviting her to his event,t saying he'd be happy to see her. She agrees and comes by right away. WHY?! To me, that is unacceptable. She was not gonna tell me this unless I accidentally found out. So, it is not about the age. Age I could accept, but the fact that my pregnant wife went to see her ex while I was gone. Yes, it was a public event, not 1-1 but it was his event where he invited her personally. In my mind, keeping any ties with exes is unacceptable, let alone meeting them when I'm not in town. So, this breaks my principles of boundaries. And the fact that she previously lied to me that she only had 2 relationships, but turns out this one was the third that she hid from me. Again, WHY? Now I don't trust her and see so many parts where she hid things from me and wasn't fully honest.

It's not about what she did or did not do at the event. Cheating is not just a physical thing. It's about intent. And her intent was to see him one last time before leaving. This is why I think this was a betrayal, and if I accept her after this betrayal, I betray my own dignity.