In the Witcher 3's "Ashen Marriage" quest, set in Novigrad, Geralt assists Triss Merigold and her fiancé, Castello, with wedding preparations. His tasks include monster extermination, procuring alcohol, and selecting a wedding gift for Triss. The gift's significance impacts Triss's response; a memory rose, a callback to Witcher 2, elicits a strong emotional reaction, unlike more mundane presents.
However, Dijkstra's revelation of Castello's connection to witch hunters throws a wrench into the proceedings. Castello, it transpires, is being coerced; the hunters threaten to expose his illegitimate daughter from a previous marriage.
Geralt can disclose this truth to Triss, either alone or with Castello. Regardless, the wedding is called off. Triss is either disillusioned by her fiancé's deception or appreciative of his honesty, concluding the marriage was premature.
This plot development had the potential to enrich Geralt and Triss's dynamic and further develop supporting characters.