So have been together 3 years. I went out the other week with friends and our children after school. Just a general catch up, weren't out late and Me and DC has a nice time. DP got annoyed at me for being our and not replying to a non urgent text. Turns out from speaking to DP the next week they were jealous because other people were doing things at the end of term and they weren't.
DP wanted me to get a babysitter for my DC so we could spend a night together. We haven't been able to recently due to child contact issues with DC dad. I said no. DP went away the weekend just gone with a friend which I obviously have no problem with and was happy they were having fun. An opportunity arose for me to go to a concert that weekend they were away. I asked my DM to look after my DC in the evening and I would return that evening and stay there too. It was a big concert. I was so excited to be able to go. DP got annoyed at me though. However was just blunt, hardly messaged and I knew something was wrong. So I asked what was up. DP said how could they say no to them to spend a night together but yes to this concert.
I replied it was a last min one off thing and my DM had said she would look after DC and she was away and otherwise I'd just be sitting at home staring at 4 walls.
DP has gone on to say that I'm mean and rude and awful for doing this and I should now apologise. I feel I'm not though. I didn't plan this and it was a one off opportunity whilst DP was away having fun. Who's unreasonable?