Am I the problem i could really use the advice

My bf and I welcome our baby boy 6 months ago ever since we’ve had our baby things just been different he doesn’t have a job and only watches our son when I’m “nice” to him so all throughout the night I’m the one who has to get up with him plus get up the next day to go to work. Whenever if I’m negative and complain to him he immediately blacks out on me and says this is from years of me doing this and if our baby has trauma it’s my fault because I shouldn’t of started with him? That makes no sense to me you’re a grown man watch how you react I’m not being all loud with you he blames me for him getting out of character and acts the way he does in front of our son but if you ask me he can still talk civil with me without the need of shouting so loud it makes our son cry