confused

i really don't know what to do. i've been with my boyfriend for awhile and i thought i loved him. but now i'm not sure. i know he's totally in love with me and wants to marry me, but it's all going so fast. i'm 3 years younger than he is, so marriage seems a long way off for me. he's not really doing anything with his life, and i know that i will not stay with him if he doesn't go to college someday. he'd be heartbroken if i ever dumped him. i dont know how i feel about him anymore. i dont think i love him, because i really like someone else. the other person feels the same way about me, but he doesn't want a relationship right now, and i think he's saying that because he doesn't want me to leave my boyfriend for him. i just keep telling myself i shouldn't think these things, and i should just stay with my boyfriend, but everytime my boyfriend tells me he loves me, i feel like im lying when i say it back, because im not sure. i dont want to tell him about this because it would break his heart, and i couldn't do that to him. i wish i could just stop my mind from thinking sometimes.

Hmm ive been in a situation like this before and all i can say is Leave them both and look forward to the single life!

reasons:
1) You don't care about your bf anymore...if you don't care all there is is sex. Obviously he isnt fulfilling at least some of your needs so why stay with someone that makes you feel open to look for others?
2) When a guy says he doesn't want a relationship..HE DOESN'T WANT A RELATIONSHIP...not now, not ever...or just not with you
3) When you can so easily get over someone you aren't ready for commitment..especially if you feel like you have to lie to protect someones feelings, try dating for awhile instead of tying into a relationship..that way you can narrow down what it is you fall in love with about a person ;)