Am i doing the right thing?

My name is deanne, i’m 15 years old and my best friend is 17. His name is alex, and ever since the first moment i saw him i knew he was the one i wanted to be with. Well, the problem is that we are just friends. He knows that i really like him, and he feels the exact same almost. He told me about it this past weekend, but he doesn’t want a girlfriend right now. I guess you could say i’ve been waiting for him for about six months now, but is it time to move on? I’m scared it’s going to take him a bit while longer to finally decide what he really wants.
The second part of my problem is mainly what affects our friendship: we mess around quite a bit. It all started about three months ago when we had our first kiss. It’s not like it was planned, it just happened. But we do a lot more stuff, almost everything but sex. And for those curious, we are both virgins.
So back to the main two problems. Should i wait for him until he wants to be with me, or should i just be friends with him and date other people?
Should we still mess around? I’m confused about this one because there’s still the chance we will get together, and it’s already been happening so why stop now?