Originally Posted by Smithie
Why does X even know the dates and locations of birthday parties that happen on your parenting time? You might want to enforce a boundary there. Same thing with Cub Scouts - next year, pick a troop that meets during your parenting time, and don't tell X where and when. He might holler about it, but he's not actually entitled to an itinerary or your events during your parenting time.
It depends on the agreement between the parents on this one. In our case, both parents are required to let the other one know about any regular extra curricular activities that the child is enrolled in. One-time things like birthday parties, trips to the amusement park, play dates, etc don't fall into this category, but girl scouts, dance lessons, summer camps, etc do. Both parents know when and where those things happen and could, theoretically, attend if they wanted to (though in our case that doesn't really happen).
If dad's time is limited with his son (I don't know if this is the case or not), I can understand why he would want extra time where he can get it. And children's extracurriculars are, in my opinion, a place that can happen. I understand not wanting to deal with your ex so often... as someone who can count on one hand the number of times she's been in the same room with her step-daughter's mom in the last 3 years, I really really can... But it is your son's activity and if he doesn't mind having both parents there, as the adults we kind of have to suck it up. If you really don't want to see him, let dad be the one to take him every week and plan other special events with your son... no reason you can't have a weekly dinner date or mini-golf night or something for the two of you.