Boy Problems... Help!!!

I'm hurt and confused. This boy and I've been talking for about a month and we've been doing amazing. He smart, amazing, and always has me laughing. But recently he's been acting weird. Like a distant weird and I don't know if I did something to make him act like that or if im just overlooking things, but the way he's acting has my feelings really hurt. We would always call eachother or FaceTime eachother everyday but now he barely answers my texts and when he does its hours later. I just... I dont know what to do and I really need help because I like him alot. Can someone help me and leave some advice in the comments and give me ideas of what I should do?