One year post partum and don’t want sex

Someone please tell me this has happened to someone other than me. I didn’t date my bf long before we got pregnant (6 months) we were very intentional and knew we wanted to be together, marriage was our plan and we talked about it frequently so when I got pregnant we were happy about it though we had wanted to wait until we were married. Fast forward it’s one year after having the baby and we haven’t had sex.. I’m not into it.. I don’t feel arousal and if I try to fake it he knows me so well he can sense it then he’s turned off. We’re glorified roommates at this point, we take care of our child and that’s basically it. It feels like our relationship is dissolving and we’re just co parents living in the same house. How do I change this? We tried therapy but it’s not helping I need advice.