Hi OP,
I’m going to give you my perspective on this as I’m both a stepmother and a mother who coparents a son with my ex.
My DS9 wanted to do an activity and I suggested rugby as we have a lovely local club, I know a few of the coaches up there and my best friend’s son also plays for them in the same team as my DS.
Over the last year and a half I have forged great friendships with the other parents and my DS’s sport has also become my hobby. I look forward to his Sunday games and training sessions, I volunteer at the club, and the rugby club has become a big part of my social life.
My ex (DS’s dad) and I pretend to coparent well and to the outside world it could even be perceived that we get along well. His girlfriend even thinks we coparent well.
I do this for my DS but the reality is I absolutely hate my ex. He is a bully who has pushed my boundaries at every opportunity under the guise of “doing it for DS”.
But in truth, to keep the peace I have to “manage” my ex and constantly walk on eggshells around him, watching what I say just in case he flips out at my later on. Unfortunately I can’t simply block him because DS is too young for me to be able to cut off the line of communication to his dad.
If you asked his girlfriend though, she’d undoubtedly say I was the problem for not inviting my ex or including him in things to do with DS on my time with him. Much like your situation, I have my DS most of the time so it might look unreasonable that I don’t want his dad doing things with him on “my time” considering I have much more custody of DS.
But the truth is the thought of being in the physical presence of his dad fills me with such anxiety that I could be sick. The thought of having him in my social space feels like an invasion.
Currently I take DS to all his games, training sessions and pay for all his subs and kit, regardless of whose custody time it falls on - not because I’m being controlling but because ex is lazy and is likely to not take him on his time.
My ex wants to come watch DS play and I am dreading it. I have offered for him to take DS when it is his custody time but I’ve avoided sharing the fixtures timetable because I’m terrified he’ll just turn up on my weekends.
If I thought he’d just come, stand on the sidelines, watch and leave, I’d be less anxious. But he won’t. He’ll try and stand with me and my family and try to engage me in conversation. He’ll try to muscle in on my friendships and start hanging out at the rugby club and try to befriend the other dads.
The thought of having to be around him week in, week out, fills me with such anxiety and makes me want to cry.
My DS has never asked for his dad to come but h probably would enjoy having his dad there to watch occasionally. However, I have made enough sacrifices to my mental health after years of abuse from my ex that I’m not willing to aid his presence in my life any further.
I am not willing to share time and space with him on my custody time with DS.
After such a short time of dating, you may not understand the full dynamics of what is going on with your DP and his ex so I wouldn’t be so quick to judge her for saying no.
Her mental health may not be able to cope with it and they can take turns to see him play his sport on alternate weekends.