" I’d say that of the two choices, Helen will be safest if she finds her own way back.”
“A girl traveling alone on a voyage that long?” Castor protested.
“I’ve done it before,” I reminded him. “Not as a girl.”
“Yes, well, er, a few things have changed about you since then.” His face turned a little red.
“I know how to count days and watch the changing of the moon,” I replied. “I won’t be taken by surprise again, even if I have to spend every day of the voyage wearing a--”
“All right, all right, I believe you!” Poor Castor couldn’t wait to drop the subject. “You’ll travel as a boy again. Fine.”
“And Milo will come with me, so I won’t be making the journey alone,” I said.
My brothers exchanged a doubtful look. “She does insist that they’re only friends,” Polydeuces said.
“So far,” Castor remarked. “The boy’s young, but not that young. Have you looked at him lately? I wager that by the time he reaches Sparta, he’ll have a thicker beard than Father’s.”
“Why are you talking about Milo and me as if I weren’t here?” I asked angrily. “What are you afraid will happen between us? Half the Argonauts believe it already did, but that doesn’t make it so.”
“Not yet,” Castor said. “People change, especially on a long voyage. "

― Esther M. Friesner , Nobody's Prize (Nobody's Princess, #2)