Feels like I'm here to provide and take care of the kids these days. Makes me feel used.
I bet, especially since you gave up living with your son to be with her.
Regarding childcare, that’s obviously a huge “give”. Is she giving more in another area such as rent, cleaning, meals, etc to roughly balance your division of responsibilities in the relationship? If no, I’d be tempted to drop offering the childcare service and use that time to regain more custody of your son, GAL, etc. more self differentiation! Like she’s asking you for, too.
