OMG he said he LOVES ME .. what ?

Well, i've been flirting with this guy like for a month and a half, and he's the sweetest guy ever. We began to date last friday, and one day later he told me "I love you" like, really, he meant it... And i said i love you too and that is so not true, i mean, i'm not IN LOVE wih him yet.. Can he really love me THAT fast? :S