Boyfriend 46m loves to assume things on his own and concludes things without telling me 31f

I’ve come to realise that my boyfriend (46 m) of 6 months has the tendency of assuming things (plans involving us in this case) on his own and then jumping into his own conclusions, either expecting me to know what he has decided on his own or not telling me at all and then acting like I would have known. So here are 2 examples lately. And I’m frankly at my last straw dealing with this. I’ve told him that he needs to communicate better and to assume less but he doesn’t seem to see an issue with himself.

Example 1:
He sold his car recently and occasionally when I can, I’ll fetch him around. Of course this has always been planned. So let’s say he wants a lift from me, he will let me know before hand and I will make plans to fetch him etc. Last week, we made plans to meet after he ended work and he just texted me out of the blue during the day “so what time are u fetching me later?”. I replied “wait, did we make arrangements for me to fetch you today?” my reply was from the angle of addressing the lack of communication and to clarify if we actually did make arrangements. He then replied “no. But I assumed that you were going to. Fine, it’s okay if u don’t want to fetch me”. So, 2 parts to this reply – 1, he went on to assume on his own terms that I was going to fetch him. It would be a different story if his question was “babe are u going to fetch me later?” rather than straight up asking me what time, as if we had this discussed before. 2, he tends to be passive aggressive and bring in something else that his brain assumes is linked to my reply. (assuming I don’t wanna fetch him just cos I asked if we had plans made when we didn’t ).

I then told him that it’s not that I don’t wish to fetch him as that’s a separate issue. My reply was to address the lack of communication on his part and his assumption that I was going to fetch him. I told him how that’s not very normal behaviour of any adult, as its only normal to me that anyone discusses things and plans before wording something like as if we did discuss things beforehand. Instead of seeing what’s wrong, he went on a rage to say that I was making a big deal out of it and that if he were in my shoes he would have simply asked if I needed a ride. Yeah I may be reacting too greatly but this is basic stuff to me and if anything, I’m more appalled than upset.

Example 2: we were supposed to meet his friends at the beach for a hangout. The night before, he said he wanted to bring his son (he’s divorced with a kid and we don’t stay together yet) to cycle at the park near the beach before the hangout (without me). He only briefly told me that the hangout was gonna be in the noon but did not tell me what time it would be or what the arrangements were (whether I would meet him at the beach or meet him before hand). He then texted me the next day saying he’s at the park with his son cycling already, and I asked why he did not update me on the plans (where and time and if I’m meeting him first). Once again he went on to assume I would have known. He said “I assumed u would have known to meet them at the beach as u know my friends are always at that same beach on Sundays and time wise I already told u its the afternoon so I assumed u would have known to just head there anytime. They are there already anyway. ” I got so mad, because I’ve never imagined that a grown adult can assume this much and at this point I felt like even if it was a personality trait, I felt disrespected for my time.

I then told him it’s not normal for someone to just assume I would know these things and they’re his friends not mine. He was the one texting them for the arrangements not me. I don’t have their numbers. Instead of understanding what I meant, he got into a rage again and said “it’s okay u don’t have to come. It’s such a small thing and you’re blowing it up again.” and he even added on something so sarcastic “you’re right. You’re not part of my friend group hence I forgot and assumed u would know what time they always meet.” I said, that’s besides the point. The point now is that u didn’t even bother updating me and just expected me to be kept in the loop knowing I’m not even in any of your friend group chats. Didn’t end well. Dude still sees no issue in his communication style. Or if there’s even one.

My conclusion is that he’s just someone that doesn’t think for the other party as to what they might or might not know / need to know. I believe he’s not doing it on purpose as he sincerely sees no wrong in his actions. My guess is that he’s just someone who has been ingrained to think that just because he knows something, he has this secondary nature to assume that others might know it too. In other words he’s very insensitive to what needs to be informed.

What shld I do in this case?

TLDR : bf 46m loves to assume things without telling me 31f