Pity was the last thing on Xander's mind. He loved Helen more then he could stand and he had an intense desire to for Alcuin, a desire to comfort his friend who sorely needed it.

Xander gladly pulled Helen up and then when Alcuin stood to join them, he touched his shoulders for a moment in support before following Helen into their bedroom. Then he bit his lip, as the realization that he had no idea what to do, and that he was probably the least experienced person in this situation, hit him.

How does someone start a threesome?