I think the JW definition of pagan is often blurred with unbeliever.
Aint that the truth. It wasnt until I was about 15 that I learned that "pagan" is an actual religion. My uncle (another exJW) actually is a pagan. It's rather insulting, I feel, to label every other non-JW Christian religion as pagan.
JWs use wedding rings and wedding cake which originate from pagan traditions.