Need a help about a guy that i had asked out (guys opinions would be great)?

I have known this guy for a little over a year. We are in the same grade in high school (seniors). I am 18 and he is 17, he has a lot of maturity and does not dole out bs and keeps it for real like i like about a guy. we have talked and hung out. I told him that i had liked him and he said he liked me back and we would have to see how things worked out. Last year we talked a lot about sports and cars. Both things we have in common. I am not a straight up tom boy (dress in girls clothes) but not slutty or anything real revealling. I keep it a little interesting but keep it a guessing game too. We both are fitness freaks who love the gym and sports. i am the only person he ever talks to on the phone for more than 30 min. ( i know this for a fact) and same goes for me. i had asked him out he said no eventually and i respected that. about a month went by and it is just driving me nuts because he is on my mind all the time. he plays for a travel team (hockey) and i work to jobs. we see echother on a regular basis. problem is i think he is scared of a semi- committed relationship. he has only had 2 girlfriends and i have had only 3 serious boyfriends because him and i are so picky. i told him about 2 weeks ago that being "just friends" even though we kind of ignore echother in school (not talk but we stare at echother) more him than me. i said its too hard to be just friends because i can honestly and openly say i have not felt this way about any guy in a really really long time. i have only had serious committed relationships and him and i are only looking for (semi-committing but nothing really committed long term) if it takes off in a good direction, if it doesnt work out then it doesnt. but my question is why does he stare at me a lot, even though we have been through all of this already, and have talked through txting since i told him the second time, what is he so scared of? if he is? and what is kind of a good way (not a slutty way either) dont generally get a long with girls to begin with....to put myself out there to get him to kind of see what he is missing out on a little bit.