Help!

So this guy I've known since 4Th grade and we met running cross country. So just recently we admitted that we liked each other. Well there are these times where I just feel like I don't like him and I want to just be friends. We have been talking for like ever. But he always will leave me on open and read when I try to start a conversation. Are there better guys out there or am I just supposed to wait until he quits doing this??