Is it normal that i love a guy who is dating someone else?

okay, where to begin? There is this guy I am in love with. i have known him my whole life, but the past 4 years i've gotten to know him well. We are three years apart, which doesnt seem like alot but it is when you are still in high school and he is in college. Anyways, i use to see alot of him when he was in high school and we always talked online and had alot of inside jokes. now that i dont see him much we just e mail whenever we can,and our conversations have jumped to more serious topics. he's shared alot of personal things that i never asked him about,and despite the distnace we are closer than we've ever been. here's the thing : hes been dating a girl for two years now. he's admitted to me that i am one of the few people he can trust and his girlfriend doesnt know anything hes told me. when we are togeather i feel like we are this amazing team and nothing can touch us, but he has someone. it sounds crazy but when i look in his eyes i feel deep down that he loves me.i cant even fully explain what its like. i love him, but i dont always think he is cute. is that normal? is having faith that someone loves you even if they are dating normal? is waiting around for someone normal?