husband makes me feel like a single mom

So today my 18 month old took a late nap (5-8pm), he's been getting his molars so his schedule has been weird. My husband got home from work (office job) at 4 and said he needed to take a nap so napped with our son from 5-8pm too. So my toddler wakes up and my husband continues laying on the couch playing video games. Then it gets to 10pm and my husband claims he's exhausted and says he going to bed. Well I get mad because we also have a one month old and I know our toddler won't be tired again until midnight and our newborn still wakes every two hours. I ask him to stay awake to help me with the kids and he straight up tells me no, he doesn't care that I'm mad and that I need to deal with it because I'm their mom and it's my job to stay up with them not his. So now he's in bed while I'm awake dealing with a teething toddler and colicy newborn. He went to the desert all weekend last weekend and did nothing with us and this weekend clearly he doesn't plan to spend time with me or our kids either. Am I crazy for being mad? Him and I have talked about this at length and he always claims he'll stop sleeping so much and spend some time with is but he never does. He has never once gotten up at night with either of our kids He's also told me not to leave the kids with him while I sleep because he's just going to sleep anyway and let them run around so I might as well stay awake because it's my duty as a mom. I can't stop crying. I honestly feel like a single mom.