Just for the plot. If you have a good relationship, then there are options marked with a heart, you choose them and you're done, although even if everything went well, depending on your actions, the marriage can be happy or not, they will say in the end
Maybe someone knows. In what act does the romance with Deianira end and is it possible to take her as a wife as Kalidi, I am already in Gaul and development with Deianira is zero. And does the degree of loyalty of the companion have an influence but romance with her?