make him have fun when hes around u... dont ever get on his nerves if u can tell ur pushing him to much give him some space... nothing brings people together like a couple days apart because too much of one person always gets old..
Hang out, show him ur fun wild side. Go skateing or learn a song together (him guitar you vocals,) BOND, go to a concert, watch the sun rise together. Old days are the best bc you both were learning about each other. Secret is learning to love people for who they really are.
Play video games with him, do jigsaw puzzles together, do romantic stuff together, (depending on where you live) when fall comes and leaves fall make a pile and tackle him in them. Workout together. Lasting relationships work if you guys are bestfriends and a couple at the same time.
tease him about you being better at a sport than him, its a fun way to flirt.