My boyfriend is acting weird??...?

Oka so my bf and me and a few of My friends went to the water park and the most of the time my bf was hanging out with this kid named Trey fRom a diff skewl and when we got back to my house we didn't hold hands or even hug goodbye... Btw this was basically our first date but he wouldn't hang out with me:( oh ya and I lost my phone that night so I have no way to get ahold of him