Nope, you should not back down against his manipulative, gaslighting, lying b.s. he is trying to put on you, he is a grown a$$ man who made the decision to be in a relationship with someone who made it crystal clear they do not want kids a long time ago, so the only person here who is actually selfish is his a$$ and don't forget that, seriously if he keeps this up you tell him" look just because you conveniently forgot you consent to the terms of entering this relationship, is not my fault you made this choice so save it, you can either get therapy and we can move on from this or we can get a divorce and you can do whatever you want to do by yourself, because I'm not about risk my life and health for dumb reasons nor am I going to be bullied or blamed for your actions and choices either, your adult husband's name, and throw a tantrum and demand things is not going to change anything and that's final", harsh but he is not about disrespectful and manipulative ahole to you, so stand up for yourself.