Gwen finished the first part of her speech just as Syrah had told her too and prepared to walk away, but before she could Frederick stopped her.
“Gwen,” said Frederick, “I wish we could be just friends, but this is an arranged marriage and my brothers and I all have to marry a royal of the Pastel Kingdom”.
Jamie heard their conversation and was determined to do something about it.
“I volunteer,” he said.
TLDR: Gwen is aromantic. So when she tells Frederick that they can be just friends, she means it. Unfortunately for them, it is an arranged marriage, but Jamie steps in to save them.