I'm self employed. DP has a full time salaried job, 3x my income. We split bills and household expenses 50/50.
DP is off work for a week as their family are here staying with us. I have a 9 year old son from a previous relationship. DP offered to take 9 year old out with the family (on DPs side) tomorrow as I have a crucial work meeting that I can't miss about a time-sensitive project, and I need to commute for it. They have planned a nice day out together, all seemed fine.
DP said this evening that DP is going to go for a run tomorrow morning and leave my DS with DPs 14 year old niece 'for an hour or so'. Niece has never looked after DS before - and he can be quite challenging. She's also quite immature for her age, barely communicates with us, and I'm not confident she would know how to handle an emergency.
DP thinks I'm being unreasonable. I'm not a helicopter parent by any means, but if anything were to happen, I would be 40 miles away and DP would be around 10 miles away, and niece doesn't know ANYONE in our area. DP said I should just go into work later instead (???!!!!!) rather than DP not go for a run, I'm supposed to dick my work about? As freelance/SE I can't afford to mess up opportunities, and this is a big one. I'm infuriated but also quite sad that 'a run' takes priority over my DS and my work. DP has been running for about a year, I've been at every finish line, given up my own weekend plans countless times to support, and just this once I'm putting my foot down. Or trying to.
WWYD in my circumstances? AIBU?