I have a 7 and 2 yo plus a newborn. DP has a lot of days off/works from home but the older two want me for everything. If I go upstairs they'll follow me rather than continue playing downstairs. If I have to run errands they'd both cry/complain and want to come even if he was offering a better alternative like the park. When he isn't here they're very independent but when he is they're all over me all day.
I could understand if he was strict or not here very often but neither is the case. He says kids always just prefer one parent and shrugs but it means I never ever get a break because they don't want anything to do with him. When I mentioned going to the gym in a few weeks, my 7 yo said her and her sister would wait in the lobby and watch me rather than going to soft play with him 
Are your children like this? Of course I adore them but it's suffocating when they're always one step behind me when he's here.