What Briseis heard, surprisingly enough, was not Helen of Troy saying that she had no interest in Briseis of Lyrnessus.
I would be lying if I said I've never had those feelings. I've thought about it, too.
Briseis tried so hard not to just focus on those words, but it took a lot of of her willpower than she would have liked.
Briseis lifted Helen's hands together and kissed them once. Then she met Helen's eyes seriously and said, again, "you are my dearest friend. Whatever happens, whatever I feel, that won't change. I'm always going to be here to listen to you, to help you and to support you. I have no wish to make you feel like you have no freedom. I of all people understand the freedom to choose who or what you want."