"

Calypso flexed her recently broken hand. "I don't know much about Lady Artemis, or her rules for followers—"

"That's fine," Leo interrupted.

Calypso glared at him. 

"But don't they forswear the company of men? If you two fell in love—"

"No," I said bitterly. "All romance is off-limits. My sister is quite unreasonable in that regard. The mission of the Hunters is to live without romantic distractions of any kind." "

~The Dark Prophecy.

Anyone who ships Theyna, or another girl with Thalia. I'm sorry. But, if you become a hunter. Then you swear of all love. 

Here, read this to make yourself feel better.

Calypso muttered, "Apollo, when I curse you, pretend to faint."

"What?"

She wheeled on me and shouted, "You have failed me for the last time, slave!"

She made a series of hand gestures I recognized from ancient times—hexes and curses that no one had ever dared to make in my direction. I was tempted to slap her. Instead, I did as she asked: I gasped and collapsed.Through my half-lidded eyes, I watched Calypso turn on our enemies.

"Now it is your turn, fools!"

 She began making the same rude gestures toward the Germani. The first one stopped. His face paled. He glanced at me lying on the ground, then turned and fled, barreling past his friend.The Germanus with the wounded foot hesitated. Judging from the hatred in his eyes, he wanted revenge for the missile weapon that had ruined his left boot.

Calypso, undaunted, waved her arms and began to chant. Her tone made it sound as if she were raising the worst daimons from Tartarus, though her words, in ancient Phoenician, were actually a recipe for making pancakes.

~The Dark Prophecy

Sorry if I spoiled anything for you guys!