What is up with him i dont get it?

ok so 2weeks ago i met up with this guy i knew from highschool he asked me to hang out so we hung out at his house now im not a slut and i told him ive only done it with 2ppl he told me he had a crush on me and that i was beatiful well long story short we ended up having he even said we dont have to if u dont want to so he asked for a kiss when i left i did then next day he texted good morning said it was good as well as me then all of a sudden he hasnt been talkin to me i even wrote to him few days ago why he not talkin to me no response i dont get it its not like he has other girls cuz i kno what do u think is up with him and what should i do?