I feel like I’m falling out of love

I just don’t know what to do. We had our son a year and a half ago and it’s like my husband became a child too. I am the default parent. My husband last night didn’t even know where to find pajamas in our sons dresser, didn’t know what size clothes he wears…. Yesterday he was shocked when our son was “meowing” when looking at a picture of a cat and I was like he has been doing this for months now. It’s like I tell him things and he doesn’t hear or care to listen. He puts more effort and time into his hobbies than he does with our son and I’m just tired of it. I’ve tried talking to him about all of this so many times and I just get hit with a whiny “you don’t like me anymore” statement from him and now I’m like damn maybe I actually don’t like him anymore. He hasn’t made our son a priority EVER at all since he was born almost 1.5 years ago… has anyone experienced anything like this? Did it end in divorce? Couples counseling isn’t available to us, and he’s about to leave on a 9 month deployment anyway. I just feel like I don’t care about the relationship anymore