Percy's Sacrifice

When Mars was talking to Frank in The Son of Neptune, he said that Frank had a sense of duty. He said that Percy was going to have to make a sacrifice, and he wouldnt be able to do it if Frank wasen't there to help him. Ella said that Wisdom's daughter walks alone, the mark of athena burns through Rome. What if percy has to sacrifice Annabeth??? NOOO. I love Percibeth. But I bet they will break up.