AIBU to be annoyed that my partner of two years is meeting up with his estranged wife. To put it in context, they have been separated for over 7 years but have stayed in touch. She lives quite far away and is coming to London for a short trip. They are going to meet up for a drink and she will be staying at his place (he spends most of the time at my place). He says I am being unreasonable to be jealous and says he doesn’t have to justify himself for meeting up. I have been cheated on in the past so perhaps I am being unreasonable - am I?