Over reacting or not?!

So last night me and boyfriend got into a little disagreement and I went and slept on the couch and he followed. Well lately he’s been so much on his phone and he’s been receiving text messages like around 10pm and he never used to text that late. I’m not the type to search through his phone. But I told him to come sleep with me in the room and he told me he didn’t want to because it felt “cooler” in the living room and his phone just kept going off. So I just left and sat in my car and I messaged him and I told him that I left and if I wanted to sleep alone I would’ve just stayed at my place. Well he didn’t even call or message me at all. And like after 15 minutes I walked back in I had seen he was texting someone else. Not concerned about me. So I was wondering what would y’all have done?