A guy who has all the time in the world for me, and my boyfriend who doesn't have any at all?

My current boyfriend John and I have been dating exactly a year and four months today (though I'm not counting, I did get a text for him saying so). The minute I met him at a friends birthday party January 1, 2010, i fell head over heels with him, it was like love at first sight, and no I am not being dramatic, it was supposedly the same for him. Anyways, we are both 17, have been dating each other since sophomore year in high school, now almost in our senior year. We have literally been through everything together, eachothers proms and dances, we've been arrested together, gotten our licenses together, gone through high school together, most of the jewlery i wear everyday is from him, and also we have been through many deaths together, even a suicide. We have always talked daily, even though we go to different schools (we live 10 minutes away from eachother) we see eachother sometimes during the week, then friday, saturday, and most sundays. His family and I are also very close, as his mother is a teacher at my school. We have the same friends, and just have grown so close ever since we've met each other. We are also intimate, which has made our relationship even closer, if somewhat maybe too "comfortable"? Whenever I am with him, it's like all he sees is me (and no i am not being conceited, he just doesn't seem to show much interest in other girls like my other guy friends). Well anyways, a few months ago, someone very close to his family, committed suicide. It even affected me. He seems to always be moody with me though. Also, he recently got a job washing dishes in a kitchen, where he works from 10 am to 10 or 11 pm sometimes...it started out only on sundays, now it is every friday, saturday, sunday. So the past 2 weeks left of school, I have made the effort to come and see him/study for finals/ spend time together. I'm not mad that he has a job, and he says he only took those hours because it is summer, and since those are the only 3 days a week that i usually see him, i got nervous. I am also upset because he had just told me out of no where, he didnt even ask me "well how would you feel about me working these hours". He said he would have time for me, but we will see, because i asked him "so, what are you trying to say, we should break up?" ande he said "No!" but now, he just told me again, out of no where, that he is doing this summer internship for designing video games (what he wants to do in college) and that he is going to be very busy this summer, also going to visit his sister at college, and his father who lives in a different state. Also, he doesnt really text me as much anymore, he says work is very busy, but honestly it isn't that hard to slip in a text message here and there or call me once in a while on his break. I also have told him ever since ive known him that i try not to be needy ( i keep that stuff to myself) he says i am not needy at all. He isn't much of a phone person, but we usually skype/talk over xbox live. He does always tell me he loves me though (which he waited 9 1/2 months to say, same with being intimate, which showed me that he mostlikely waited until he truly meant it). But lately, whenever I see him, all he wants to do is smoke pot (which his friend go him in to) and also, i have gotten the feeling that the only reason he wants to see me is to have sex....and dont get me wrong, I love it, but I just feel like the only reason he has me around anymore is for that. And it hurts me so much to even think about it, because I have never had this strong of feelings for anyone....ever. I guess what our problem is that we dont have great communication, but I don't want to talk to him about this over text or the phone, I want to talk about it in person, which i havent been able to do because he worked on friday, then was at a friend's parent's anniversary party. So i am going to talk to him about it tomorrow. But then there is this guy Nick, who i met a few months ago at a sort of group gathering thing for church which is like a hang out thing that meets every wednesday for teens ( i know probably sounds lame but it isnt!) anyways, I recently started talking to him, and we have been texting non-stop, which i dont really feel guilty about because my boyfriend doesnt seem to give a **** at the moment. Anyways, we hung out on friday, and he keeps asking my friend to get me to break up with my boyfriend (sounds like stupid high school drama i know) but we had the most amazing time together friday and we have so much in common, and nick tells me he will treat me right, and will have/make time for me unlike john, and that he will wait for me. And part of me is like, if im starting to have feelings for someone else, then that should be telling me something. But i'm worried that if things dont work out with nick, i will have thrown away the past almost year and a half for nothing, but at the same