How to make this more then a summer fling?

So I like this guy a lot. Here's a brief story of us. We met at a friends party and he asked me to dance then we kept in contact via Facebook and he eventually asked for my #. We went on a first date watching a scary movie and he held me and all that, then waited to kiss me until after the movie at the end of our date. The next time we hung we held hands at relay for life when we were walking around but he lost a friend recently so I tried by best to comfort him by being silent and respectful. The next time we hung was at a beachside festival. Thats when I met all of his goofy friends. The next time, we went surfing just the two of us and we talked a whole lot about almost anything then we flirted a little in the water pushing each others boards. He also stopped by a fundraiser I organized to say hi which made my day (: the most recent time we hung we went to the beach. We talked for like an hour and he told me how his friend tried to hook him up with this girl but he refused it and we talked about a bunch of other random stuff just laughing and joking and finally we kissed again and we madeout on the beach. The thing is last time I asked him what we were he said he felt like we were just a friends with bens thing. But when he described his perfect girl: smart funny can hold a convo but still be physical I fit it perfect the way I am with him. We've both been hurt which is why were afraid of a relationship but how can I move this to boyfriend girlfriend stage? Thanks ?: