They actually did get married pre-Crisis, though Iris died/was believed to be dead for a while, which led to Barry and Zatanna getting teased. (In fact, I believe Iris's death was what led directly to the Trial of the Flash, which led to Barry and Iris living happily ever after in the 30th century right in time for Crisis on Infinite Earths.) As a matter of fact, she's tagged as "Iris West Allen" right here on scans-daily.

I actually recall a seen where Iris thinks Lois is getting too close to Flash and calls her "a super-hero groupie".