Should I enforce more consistency in my coparent schedule?
My spouse (separated, not divorced) have a 50/50 schedule with our kids, both under 10. We try to be flexible because we both have activities we like to do that take time and we still care about each other and doing things as a family. Normally we will arrange things in advance, like if they have to go out of town for something on their weekend, we might try to switch or I'll just take them for the extra time. There is one day a week that I always end up taking them for a few hours because my spouse has an activity every week on that day. Well this past weekend, they asked if I could keep the kids on Sunday for the whole night, which it didn't occur to me until later that I didn't know why, because they were free long before bedtime. Then I realized they wanted me to keep the kids so they could go on a date with their new "friend." When they asked if I wanted to watch them all night, I said well I can watch them and take them back to your place or they can stay with me. And then my spouse asked what the kids want to do. They said they wanted to stay with me, and while I don't know FOR SURE, all signs point to them having a date night instead of spending their night with our kids.
This rubs me the wrong way, partially I can admit it's the jealousy of it, and not wanting to be their babysitter while they go out with someone else. But it also doesn't feel right to leave that decision up to the kids. My son already told me that he worries that whatever decision he makes will hurt someone's feelings, and that's not a burden he should bear. It also just makes me really sad that my spouse doesn't seem to want to spend as much time with the kids now that we've separated. There was a point in time where he was saying he wanted more time with them than I have, and now it feels like he'll give up time whenever just to have free time to date or do his activities. I can't change it, but I still feel like it's important for them to spend quality time with both parents and it's my personal opinion that it's icky to schedule dates when you are supposed to have custody of the kids.
I spoke to my therapist about this, and they said they thought that swapping nights is ok with plenty of notice or if there's an emergency or something, but that the schedule should be adhered to as much as possible and it should not be up to the kids to make the decision day-of, because she said when they're older they'll think they can make the decision and they'll think they get to stay with whoever they want (likely me). And I don't want their relationship with their dad to be anymore strained than I know it's going to be.
Would you recommend keeping it more strict? I feel so guilty when my kids do say they want to stay with me on nights with the other parent and I say no, it just feels wrong not to let them be with me whenever they want. But if I'm separated, I know that I don't get that anymore. Do you think I'm overthinking it or are we doing more harm this way?