Signs he is pushing me away

I have been dating this guy for a few weeks and we have gone on 3 dates and hung out once. Sunday we had a date and it was fantastic. We took a walk and got ice cream and then watched a movie at my place. He seemed perfectly normal and even started kissing me on my forehead (he have kissed but this seemed like genuine affection). It was overall a really great date... or so I thought. Yesterday he was really sketchy about texting me back. I thought maybe he was busy but then today it got worse. He will text me and we will get a conversation going and then POOF, no mas.I really like this boy and he seems normal when we are actually talking but texts are getting further apart. Is he pushing away or am I overreacting? What would be the signs if he didn't want to date me anymore.
Signs he is pushing me away
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