3 weeks and he's in love?

I don't see how it's possible...and when I ask him he says he just loves everything about me. I feel so bad though because I am trying so hard to like him let alone love him. He's sweet, and everything anyone could ever want...but I just don't feel for him. I am head over heels for an idiot...geez. What should i do, let him down easily or see where it goes?