Am I over reacting?!?

My boyfriend and I share an apartment we both have full time jobs and my son (4 almost 5) goes to his aunts (his dad’s sisters) house during the day and I pick him up as soon as I get off and take him home then around 30 minutes to an hour after we get home my bf comes home and half the time I don’t even notice he’s home he will go straight to his “game room” which is actually my sons toy room because he sleeps with us he just put a tv and xbox in there because my son won’t sleep in there. Anyways I get off today and go to his sisters after work like I always do and she tells me that he already came to pick him up.. ok that’s fine ig. Could have called me but no big deal. I walk in the door and hear them in the “game room” and he’s playing call of duty with my 4 year old! He literally never even interacts with his own child or even his girlfriend but he’s going to introduce him to the bloody/gory nasty shit that he is literally ADDICTED to!!!! And when I nicely said that I didn’t want him playing video games especially ones with guns he said something like “see now your just being a bitch cuz u always bitch that I never spend time with him then when I do you bitch, you just bitch to bitch” and we get in a whole screaming argument because he won’t let me speak without interrupting me and my apartment is small so my son is literally terrified SCREAMING because hes yelling at me so loud I didn’t even yell like he was yelling at me I just raised my voice so he could hear me because he kept on and wouldn’t stop yelling and we just kept getting louder but he won’t admit that his video game problem is a problem I just wish he could come in the living room for a few seconds and see me down there playing with our son with actual toys and letting him use his imagination and everything I do daily he acts like parenting is easy because he’s literally never done it by himself I feel like a single mom even tho I’m in a relationships he’s supposed to help me but everytime I ask for help , say I ask him if he can put a pull up on his son so that I can go cook dinner. He’s like “it will only take you 5 seconds why can’t you do it, I’m busy” LIKE SIRRR!! I’m BUSY! I’m making dinner and playing with OUR child and washing dishes and cleaning the house and washing laundry and I ask him to do one simple little task and it’s like “it’s not that hard you can do it” like if it’s so easy why can’t you pause the game for 10 seconds and change ur sons ass🤦🏼‍♀️🤬🤬🤬🤬🤬🤬🤬 sorry for that being so long I have adhd🥲 ig the rant is over it just annoys me so much!!🙄