Confused

My significant other of 4yrs have been distant since having the baby a year ago.. actually about half way through the pregnancy. He's become withdrawn from me. But he loves our baby, I feel like he only acknowledge our baby. We don't really speak unless it's about the baby, we haven't been intimate like we used to. I've told him how I feel several times, I tried having talks. Well we had a talk last night, which is when he told me he loves me, but I don't light up a room for him. I'm a bit confused about what that actually means.