DP and I have been together 18 months. We live separately with our own dc. Last year we went on holiday separately and decided we would do the same this year with our own dc (and maybe somewhere else together). We've both had quite a lot on so it was only yesterday that I mentioned something that I going to book for ds and I. I then asked what he was going to do and he said he'd already booked a week away early August. I'm fine with him going away as that's what is expected but I realised he had booked it 2 months ago and he had said nothing. He doesn't think there is anything wrong with not telling me. I'm just upset that for something quite significant he said nothing. What do you think?