Advice please! Is this okay?

So to start off I am a stay at home mom. My daughter is 8 months old and I do everything for her..I’ve been with her every day and night of her life. She has never stayed overnight with her grandmother (my mom) or anyone for that matter because my boyfriend will not allow it. I get a break once a week for about 6 hours I see some friends. Well this week my group of friends (some have children) decided that tomorrow (Saturday) we should all hang out and have a sleepover like old times. I brought this up to my boyfriend... I asked if he would be okay with me staying out for the night I plan on coming home early Sunday morning. And he told me no.. well he said he’s not comfortable with me staying out and that he doesn’t understand why we need to have a sleep over we’re not kids and it’s childish. This really hurts my feelings... he often talks bad about my friends who are good people and he mocks my friendships.. says he doesn’t understand why I’m friends with them because what do they do for me? I guess I’m just looking for advice or to be reassured I’m not crazy for just wanting some time to myself? I do feel as if I have post partum depression .. being a stay at home mom is lonely and I don’t really feel understood or seen by my partner