Should I just let him go? HELp?

The guy I've been seeing spoke to me last saturdY night an I haven't heard from him since then. He went on vacation Sunday morning and he never texted me again and he cane back this past Sunday the 26th. He didn't seem to have his phone in while he was there cuz he usually posts things online and didn't do that the entire week. Also the last time we spoke it seemed like he thought I was getting nasty with him... I tried to explain n he just dint answer me. Do I let go cuz he doesn't care? Do I try one more time? Help!! I like him so much n don't wanna just let him go but I also don't wanna pursue a guy who just isnt all that into me! Any input is helpful. ThNk u!