So, I’ve been with my husband for about 6 years now. We have two small children together. We knew each other through work and started dating shortly after he’s separated with his ex-wife (they’ve been together for 15 years). He didn’t tell his family straight away about us dating as he felt it was too soon. It caused me some upset but eventually we got over it, he’s got officially divorced, we started living together and then had our children. Divorce was amicable, he initiated it (from what he said, of course), as far as I understood they grew apart and also there was an issue that he wanted children and she didn’t. Worth nothing she’s still very close with his mum. Anyway, I was always a bit jealous of his ex wife as they shared so much history and I never imagined being somebody’s second wife. Still, our relationship has been great and he’s a great husband and a very involved dad. However, today our kid was watching some cartoons on my husbands phone and accidentally switched to messages, and came to me to help him switch it back (my husband was on a work call). I couldn’t resist the temptation and had a look through his messages (I know it’s not a nice thing to do, no judgement please). And there I’ve noticed a conversation with his ex wife. Nothing too sinister, some memes exchanged, general enquiries of how family members are doing. However what caught my eye is that they kind of tried to arrange a catch up - they work in the same field and she was asking if he’s going to event X, and he was saying: Im not, but going to event Y, and will be in city X (where she lives) soon. Its not very frequent. The last message is from February this year. She reached out to him because his cousin has died, who she also knew, to express condolences. he replied and ended the message with: "would be great to have a catch up call soon? xx" - to which she didn't respond. There's been no messages since. Now, it's made me really upset and hurt. AIBU to feel that talking to her and trying to arrange catch up meetings / calls is highly inappropriate and disrespectful? Or is it ok as they share so much common history, and communication is within friendly limit? Worth noting she's in a new relationship too.