Am I overreacting?

So my boyfriend posted this on facebook last night while I was at my house sleeping. I tried staying up for him because he got out really late but human nature beat me and I passed out with realizing it. I don't wanna look dumb when I talk to him about it so I need the third opinion on this. Do I have the right to be mad, considering I'm a jealous girlfriend, or am I overreacting? He's talked to his ex at least three times and we were on the point where we almost broke up. He's ways pulling stunts like this and I'm so mad about shit when he does. It's completely childish!