Partner favouring his ex wife?

First time I’ve posted anything like this. My partner and I have been together approx 2 and a half years. I’m a step mum to his children. Our relationship, when solid, is incredible and the best thing I’ve ever experienced. I moved away from my friends and job to support him but also to enable us to have more time together. We are from different ends of the country. I currently still commute to my job - approx 3 hours a day, 4 times a week but I’m looking to change this. He commutes too but will stay at his old family home with the kids once a week. He runs the business so it’s a lot easier for him to manage his days and organise meetings so the commute doesn’t have too much of an impact on him. Yesterday he realised he hadn’t renewed his private health care, understandably he wanted the children on there, my issue is the next part. He asked his ex wife (currently divorcing) if she wanted it too, he thought she did have it from before so would just be renewing. He told me this on the phone after he asked her. He didn’t know that I have private health insurance through my job. I was quite upset by this. His reasons for asking her, and again, ones I understand are - she is the mother to his children and he would want her to have the best chance if anything did happen to her for the sake of the boys. I admire that but am I wrong for feeling like I wasn’t even considered? He called me after he sent the text offering it to her and asked if I had private health care, if I hadn’t it would’ve been an awkward decision for him to make. I feel very much that he’s made his ex wife the priority here but he will say it’s for the kids. I have my own cover so it doesn’t matter really but he didn’t know that. I think she’s an adult and she can make her own decisions when it comes to private health care...he isn’t her husband anymore.

Personally, i think you are overreacting. She is the mother of his children. It's not about her. It's about them, so they can always be taken care of. Other than this little petty thing you say your relationship is great. You haven't bee together very long and you're not married.I think you are making this way bigger than it actually is. You have taken it personally when it is not.