I'm prepared to be flamed for this.
I have one teen DC, they're at their Dad's every other weekend and some of the school hols.
DP has two teen DC. He used to have them 50/50 but over the last few years it has increased, so he now has one of them Monday-Thursday, and the other one Friday-Sunday. Sometimes both at the same time. He has them both 100% of the school hols.
I always thought we'd probably live together eventually. DP has recently suggested that we start to think about how it might work.
The problem is that since he has had his DC 100% of the time, I just don't want to live with him. I do really like his DC, that isn't the issue. For me, it just doesn't seem appealing to go from having every other weekend, the odd weeknight and some school hols child free, to never ever being child free, especially when part of the time it would be just me and them at home, not DP (he'd be at work).
Am I unreasonable to feel this way? No matter how I phrase it to DP I know he's going to take it as me not liking his kids, which just isn't true. I feel horribly guilty for feeling like this!