Well, if anyone familiar to Diarmuid is going to also be familiar to her, he wouldn't be surprised to hear it is Cu Chulainn. The man is his hero, after all!

"Yes! He is!" The moment the words leave Diarmuid's mouth, though, his expression falls, "No...not always. I don't know why, but he doesn't follow me back home anymore. He just stays here. I suppose this is where I need him. I have Father when I am back home!"