Need to vent 😩 (sorry this is gonna be long)

I am so confused, hurt and angry. My boyfriend and I have been together for almost 3 years and we hardly ever argue. But lately he’s been snapping on me for no reason and I’m tired of it. I can ask him a simple question and instead of answering it, he gives me an attitude and gets irritated. By him talking to me a certain kind of way I give him the same shit back and then he has the audacity to tell me to “fix” my fucking attitude/how I act. I’m just here like if you don’t give me a smart ass answer in the first place or constantly act like a dick I wouldn’t give you attitude 🙄😒 last night for example, we went to a wedding and everything was fine, after he dropped me off and we were texting and he told me he wanted to knockout and I was fine with it because I was feeling a little tired too. He sent me our usual goodnight message and I replied by asking him what Time he wanted me to come over tomorrow and I said goodnight after asking him [so it was a double text] (very easy question to answer & it’s part of our nightly routine so I know what time to wake up and everything) , but instead of giving me a simple time he replied and said “can you just chill the fuck out and wait til I tell you in the morning” then before I can even reply to that he sent me “thanks for coming today. Bye”. He claimed he was going to knockout while we were texting but after I replied to him he continued to open my messages but not reply. I’m so beyond annoyed, I just want to cry. I don’t even know what I did wrong for him to be mad. Ugh! 😑🤬😑🤬

Not to sound weird but he goes through these phases with his family where they get along and he loves them but when they’re getting along he treats me like shit. After they fight or they piss him off, he treats me like he normally does. Idk wtf it is but it’s slowly but surely pushing me away. Its like he’s putting on a front because his mom treats his dad the same way, they have the same exact personalities 🙄 (Love his mom like she was my own but he has all of her negative traits🤬 as far as temperament and dealing with conflict) I.E. his sister asked her if the soup she was making was done yet and instead of his mom telling her yes or no, she called her a fucking idiot for asking and said “if it was done I would’ve told you”. His older sister and Dad were like “wtf why are you being so mean?” And she said “she shouldn’t have asked me if it’s obviously not done.” 🙄🙄🙄🙄🙄🙄 I don’t want to break up with him but idk wtf to do. Now instead of falling asleep I’m up crying 😢