He says he just "nonchalant"

I posted a picture of my ultra sound on Facebook and tagged my so I use that term loosely (the father) many ppl commented and liked it except him. Just a little background. He was super excited when he found out I was pregnant but I couldn't help but think he didn't want his ex to know about it. (This is just what i think not what he said) He didn't want to tell his dad about them because then his dad would tell his sister who is bfs with his ex. His ex found out because he let her use his car and the ultrasound was in the car. I saw a text where he Said he'd have to be drunk in order to tell her about me being pregnant (This all before the Facebook post) Sometimes when I talk about the twins it seems like he doesn't want to talk about and he says he's just nonchalant and that he does care. Which he is about many things but its a very unattractive quality to me. What do you think about the text would you be upset if you read that? Am I overreacting about the Facebook thing? I wasn't like angry I just felt like he was being fake by not acknowledging it.