Guy troubles

Okay so I like my best guy friend, I’ve known him since kindergarten and he’s literally the only guy I care about. Just recently he told me that he liked me and I finally had my chance to tell him that I liked him too. So everything was going good until a few weeks ago, he stopped texting me/talking to me and when I texted him he would just leave me on open. I really like him but I know I should just give it up because I will just get my heart broken in the end. Can someone please help???