"They could have been killed," Jacen snapped in return, glaring angrily at Xander's back when the younger man turned away. "They nearly were because you trusted Eve to keep her word. Extra Slayer abilities or not, they nearly died because she was never going to keep her promise."
That was the worst thing, the idea that he had been sold out by a friend because of the word of something like Eve. She wasn't trustworthy, would never be trustworthy, and yet the promise had been enough.
The act of furious Sith Lord broke and Jacen became visibly more agitated, letting his emotions creep through. "You know if you had just asked me, asked if I would offer my life to protect them, I would have. If you'd asked Sam if he would die to protect his girlfriend, he would have. But you went behind our backs and trusted Eve over your own friends. Why?"