I think a 15+ year relationship with someone is more than enough to believe that its possible...
I can give you a real life example of people who dropped the "shell" with much worse reasons to keep it. The survivors of the auschwitz camp in WW2, i saw many survivors saying that they were so angry and they wanted revenge at the time when they left the camp but after a few years they made peace with their past and its the only reason they are happy today...
What a weak example, first, RL, second an amount of people who share this awful terror together, third, after WW, medias help to ehlp them, confort them as it was possible to do: governments, associations, volunteers....
Yen'es story is not History, is a fiction character, but yet she was alone, no media support, no psycologic support, alone for almost a century, Geralt, at least had Vesemir, and Eskel, Lambert, ..etc, and he always cameback to Kaer Morhen where he found a family welcome.
Yes you can:
- In the last wish quest when Yen bites Geralt when they kiss, after that she says: "It can't be all sweetness and light" (Yen is soooooo romantic)
Where do you leave the sexual complicity based in absolute confidence one in other between to passionate lovers? Where do you leave some sense of humor, some jokes between lovers?
- In the warewolf garden when she plays the pun game with Geralt for 10 seconds then she got tired of it.
Since when the mood of a couple must be synchronized? Both happy at the same time, both kidding at the same time, ALWAYS? What boring relationship... and people, also.
Here is a great advice for Yen:
If you want to be happy in the future you have to make peace with your past
My greatest advice for you: make the effort to knowing someone before talking about his/her.... just for avoid misunderstoods