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 simpler alternatives.
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 choose to disclose this truth to Triss, either privately or with Castello present. Regardless, the wedding is called off. Triss is either disappointed in her fiancé's deception or grateful for his honesty, concluding the marriage was premature.
This unexpected turn could have enriched Geralt and Triss's dynamic and further developed supporting characters.