Boyfriend advice please. I’m so in my head

We’ve been hanging out for like 7 months but officially dating for 3. I’m having a hard time trying to put this into words but I feel like since he is the most EMOTIONLESS person in the world that he doesn’t really care for me or for my happiness. That’s how it comes off sometimes. Seriously, he never gets super mad/sad/upset and needs my comfort. He’s so calculated. I feel like I have so much to give and I try to show it but I hold myself back because I feel overbearing. I know he’s not emotional and that’s just who he is, but I get so damn insecure. Do any of you get this? What do I even do about this? Please be honest..