After all, we already know that Barry and Iris will finally tie the knot this season — thus giving Iris the Flash-ified newspaper byline teased during The Flash’s first season.
Beyond that, Season 3 was so heavily influenced by the drama between these two; to keep things fresh, playing their increasingly improving relationship for laughs can allow the series to give WestAllen shippers their happiness while focusing the episodes on other issues, like Harry’s diminishing sense of purpose and The Thinker’s master plan.
Even without the funny business, it seems doubtful that this couples therapy subplot could have any significant and permanent negative impacts on the West-Allen dynamic.
(Not that we think that wedding will go smoothly, but we can hope.)