I'm new to this website and new to the world of step-parenting. I’m not married yet but in a very serious committed relationship with my SO. He has a 4 yr old with his ex-wife. I am driving myself crazy with the thought that child support has the possibility of increasing as our household grows financially for the next 14 years. I find myself jealous, angry, and most of all scared. Scared for the wellbeing of my potential future family’s financial wellbeing. When I bring it up with my SO he gets defensive and isolates himself emotionally.