I have also been invited for a day out in April but it is a football day and he refuses to miss footy to have kids
So, why does he get to pick and choose when he is a parent and you don't?
Sounds like he needs to do his fair share of parenting.
If you were divorced, and he had his children every second weekend how would he organise his childcare? ask him and suggest he does that.
what will his priorities be when his children have weekend activities, will he miss those activities for football?
most people realise they have to really work at a relationship for it to be a happy fulfilling one,
has it not occurred to him that if he doesn't meet his partner half way, they will decide that seeing as they only have one life they might want to spend it somewhere where they aren't taken for a mug,
He's not stupid, it has occurred to him, he just doesn't care, why would he, you put up with it so he has no reason to change.
If you are not being treated as an equal make sure that gets changed immediately, because you will regret all the time you wasted being used, and it will kill your relationship.
Sorry if that seems harsh, but if someone didn't care about me I wouldn't waste another second of my life on them.
You are just as entitled to a rich fulfilling life as he is, stop comprising yourself out of your life.