A few hours later, the four of them were enjoying a quiet barbeque out on Charles and Agnus' back porch. Mark had prepared himself and tried not to dote too much on Sarah. He spoke to Agnus often and even spoke to Charles about helping with the new houses he was constructing on the south end of town. Mark was very pleased with himself. Through the whole night, he tried to use math to help him show Agnus that he was just his normal self, and like everyone else, just happy to have Sarah back. He used a formula for how often he should address Sarah. For every two times he spoke to Agnus or every one time with Charles he could say something to Sarah. This would give the appearance of casual conversation when, in reality, all he wanted to do was hear everything Sarah had done in the years since he saw her last. With the replies to people's questions and responses to general queries, he thought it would appear just random enough that Agnus would be convinced.