Am i normal to be obsessed with music?

I am obsessed with music!
It's become an addiction and a way of life for me!
If I'm not playing or listening to music then I'm humming "that" tune in my head which I was listening to earlier.
Its like a constant loop in my head.
Even when someone is talking to me, most of the time my brain is in "loop" mode and that seems to be all that's going on up there!
I love my passion for music but now it's an addiction and a concerning obsession.
I'm sacrificing other things because of this addiction and I don't mean sitting watching every soap on t.v... I mean friends and people who I love in my life who are always there for me when I need them! People like my girlfriend who I love to bits but she always is second best to my music?
Now you tell me that this is not an obsession?
Putting my music before my girlfriend! I must be mad right?
See there must be something seriously wrong with me or is there anyone else out there that feels the same way?
Because I just can't explain how I feel to anyone as they just don't understand, they just say " uh hu we all love music it's a great thing to have in life!"
And so I'm like " great thing" is an understatement, its become my best friend! But again no one understand and I'm writing this in hope that it's not just me but also others out there that are in the same sort of situation?
I believe that music is a strong instrument but it doesn't mean you have to abuse it like I have and now I'm stuck in this loop going round and round and there seems like there's no way out and it's never going to end!

Thanks, Rich (dj/producer)