Am I overreacting?

My boyfriend and I just back from a breakup today. We saw each other for a while and agreed I was going to stop being toxic and he was going to put more effort in being lovey dovey, the romantic type because that was a huge issue in our relationship. Today we left each other at 4pm. I called him when I got in the house and he said he was probably going to stop by later. It's 9pm now and still not one single msg! But he is posting online everywhere....

Am I wrong for being upset? Like atleast send a msg saying you're not coming or going to sleep. Something...