Baby put a strain on our relationship...

My baby is 9 months old. I fell out of love with her father not too long after bringing her home from the hospital. I'm basically a single mom even though I'm still with her father and we live together. Getting him to help me with the baby is like pulling teeth. I've been doing it all on my own though for long enough that I don't even care about that anymore. Now it's just the idea of actually trying to maintain a healthy relationship with her father. I don't think he realizes how unhappy I actually am. I've told him, but he doesn't really seem to get it through his head. I do not want to be with him, lately he's been really pushy about sex. I try to avoid it at all costs. We've done it less than 15 times in 9 months. I just hate it, I have no desire to do it. When we do I just wait for it to be over. I'm 23 and need lube because it just doesn't do anything for me. I'm so tired of pretending, how do I fix this? I don't hate him, I care about him. I think I still love him but I'm not IN love with him. Idk, is anyone else in a similar situation?