How do I know if Im really in love with him or not?

I have been with my husband for 5 years.. Well we have only been married since January this year, but together for 5. Anyway, I love him, I really do, but sometimes I kind of feel like its not enough.. When Im not with him Im always thinking about him and telling myself how much I love him and how perfect everything is, then when Im with him its not like anything that goes on in my head. Things get so different. Its like I make up this fairy tale inmy head and then when I bounce back to reality, its depressing. Its almost like I think him up more then what he really is.. does this make sense? I dont know what Im trying to say. But I am wondering if I really love him or if Im just stuck in some fairy tale.. trying to find a perfect true love when there is none to be found.. Can anyone help..?