A short back story so you don’t think I’m weird - my previous parter of 12 years struck up a friendship with a women at work. I didn’t mind because I felt confident in our relationship. Fast forward 6 months - he left me for her. She was 15 years younger. I didn’t see it coming. Naive ? Maybe. So when my partner of 5 years struck up a friendship with a woman at work I felt a tinge of dread - but as they were just talking at work on teams I didn’t see the problem until he said he was meeting her outside work for coffee. I said I felt uncomfortable with that as I don’t know her, and after my last experience I felt it was a bad idea. I looked at their text exchange and she was asking him how tall he was , saying how much they have in common and he said he liked her and had a connection. He agreed not to meet outside work and also to cool it with the texting up and down, sharing selfies etc outside work. Fast forward 3 months , I went to Spain with my female friend of years, while I was away they met up for a two hour dog walk. He didn’t tell me , but I had a feeling he would do it so I asked him outright - he hesitated and then said yes he did. And that she also knew I was away. I find this duplicitous behaviour. So I said that if the friendship is so important then go for it but he can do it as a single man. Apparently I am hysterical and over the top. But honestly it brings back all the humiliation as before. So he has now told her he can’t see her outside work because it creates anxiety for me and this makes it difficult for him She was very disappointed and is keen to pursue the friendship and can’t understand what the fuss is about.
have I been unreasonable ?