I think that's how the majority of men are and I don't think they're annoyed, like the previous person mentioned, they just can't fully grasp it yet and understand. It's like the reality hasn't set in yet. My boyfriend wasn't really involved a lot or talked much about the baby until we went for the first ultrasound and we found out we were having a boy, then that's when he got super excited and started shopping for the baby , he bought so many batman onesies lol and he started to talk more about him. Give your boyfriend some time
Honestly, my hubby was overwhelmed when we found out & after we decided what we were going to do, I just couldn't stop talking about allll the plans I had for our little family! I didn't see it at the time but I do now , I talked about the baby constantly! He got annoyed too, but it wasn't that he didn't want to hear about it, he just can't understand just yet.. As you get further along he'll get more involved! The ultrasounds help, but when he got to feel our son move & see him move from the outside of my belly he was so into what he wanted for his son. & the kinda parents he wants us to be. It's sweet really.