Am I in the wrong here??? My husband is just impossible

I got into a fight with my husband regarding his son...We have a child in common on the way and I have some children of my own...I work overnights and only have 2 days a week that I can spend sleeping with my husband in bed...the first night I spent 2 hours giving him a blow job and immediately he wants to invite his son into the bed at 2 am, I told him no because I’m taking a shower and I’m coming out naked...he just goes downstairs to lay with hims son and never comes back up so I slept by myself the whole night...we frequently have arguments about the kids and boundaries I feel like we have so many kids that night time is adult time and it should be our time...especially when I only have 2 nights home. He took it the wrong way and made this about his son when it’s not...

The next day same issue we got into an argument about his son and I told him how I felt and that he treats his son like a king and treats my kids and me like they’re better than us (it’s the truth) I’ve been keeping it in...his son does no wrong and my kids are bad, his son doesn’t have to eat what I make for dinner but mine do. He puts him on a pedistal and treats us like second best. So he left fir the night again and blocked my number like he always does when he’s mad and messaged me at 11 pm said he will come back to my house but he wants to lay with his son...okay I agreed thinking he was going to lay with me after!! and he came to my place at 12 am and laid downstairs with his son again the whole night didn’t come up to talk to me or anything ...why tf did he even bother coming back over??? I feel like my marriage is over, he doesn’t respect me or boundaries, and again it’s not about spending time with his son it’s about rationing out time between everyone, night time is supposed to be our time (our only time!!!) together... am I wrong here?