How to make the first move on him?!? I want to have sex, and we've bonded long...

[Me]

...enough...? I have known this guy for 6 years and I fell for him. I used to be overweight and had acne, and no guys wanted me. But this guy was so nice to me and we became friends. He would do so much stuff with me like see a movie and go to his house. I would always make him blush sometimes and he did the same with me.he helped me also with my depression,and said that if I left this world he would be so sad and miserable. He would tell me how beautiful I was even though I didn't think I was. Well I lost all of my acess weight and acne, and my boobs grew and guys wanted to talk to me more, and he would get really jealous. I also would make him get hard-ons a lot. We went to havasu and went tubing, and he was on the bottom I was on top, and when the boat pulled the tube we would bounce up and down and he would make orgasming noises. I also have stayed in a bed with him and even though we were far apart, he would get really hot temperature wise. I even asked him if he had a fever. I think he likes me, and I kind of want to take it to the next level and have sex. I'm 18 he's 19 and I am pretty sure I'm in love with him. How do I make the first move??I am so in love with him and a lot of people including me think he's handsome too.