It's a solid take in general. But her sudden distraction and lust towards another happens only after you commit to each other. Her romance route is emotional, complex and challenging as it is.
I wouldn't necessarily have the same impression. She's got an eye out for Karlach and seems to be testing the waters around Wyll a bit, and as someone else mentioned, there is no denying the hate-fucking energy she has around Lae'zel. I think she's just a bit horny in general, but to be clear, those are entirely personal takes, feel free to disagree.
Now we are getting a bit stuck in circles and I think we just have different views and tolerance towards how accepting we are of a partner expressing attraction towards other people, and it's ok to disagree on this. I am probably not going to convince you to be chill about it and you are not going to convince me that it is some form of emotional affair or cheating. I respect your feelings about it and I think you need to allow yourself to enjoy the game in your own way. There is no right, or intended way to play the game or interpret the characters and story in your own game. Let Halsin die in the goblin camp, ignore the shadow curse or give him to Orin. Who cares if other people make memes or call you petty or insecure or whatever over it. There is no approval system for random people on the internet within the game, so it doesn't matter what they think of your decisions.
