I think I'm falling in love with my coworker.
How do you know that you are falling love?
I listened to my beloved band's song dedicated to my kind of people daily and it's making me realize I have feeling for them.
It's fine that you feel strongly about your coworker, but work relationships can be very tricky, so I suggest you be careful. If you think your coworker feels the same way about you, then it would be fine to act on your feelings for them.
I'm sure my coworker feels the same.
If that's the case then I think you should let them know how you feel. It could lead to a great relationship. However, it's also smart to keep in mind that if it doesn't work out then it could become very awkward.