I know that this is hard to hear but the reason that is seems like you cant live without him and his feelings were so strong one moment and then off then next is because your young. I mean when I was 15 I was in the
same exact situation. I loved this boy more then anything and he loved me and then one night he just called and said it was over. I mean it sucks but it happens. Teenage boys are really hormonal and as hard as it is its best for you to know that it is probably over. Your young and you will find someone new. But after hearing this I would really advice you from getting pregnant because a baby will not make your relationship better. It will break it. Having a baby is tough enough on a healthy relationship among adults let alone teenagers. I wish you luck and am telling you that you will find someone else.. Dont put up with his crap. You have so much time to find someone who will treat you like a princess. It is very rare that we find who we are going to be with for the rest of our lives when we are 15. This is nothing against you, I am just telling you from my personal experiance. Also you should date around. 15 is your time to get out there and date, have fun, go to parties, live it up. Once your married thats over. By dating you can take all the good qualities in boys you meet along the way to know what you want in a husband. I believe no relationship is a waste of time, you learn from every relationship you are in. My advice is to move on, and appreciate what you two had. Dont let it get bad, talk to him and tell him your concerns and ask him. .. And hey its like they say let him go and if it comes back it was meant to be.