Advice needed

I've been talking to this kid for about 2 or 3 weeks now and he's been really sweet :]

then...all of a sudden yesterday he started acting really sketchy and hasn't called me and has barely texted me. I don't know if he's just had a bad day or if i did something wrong or if he just lost interest, but today he kissed me and then was fine, but still different? idk help me out here. please :]

Soo..today he kissed you? Well then, it seems that everything should be fine.

If you think he's acting different then you should probably ask him.