Luke heads outside and sits with Nico on the stairs outside, and Luke was trying to get Nico on his side because Nico is the son of Hades an could help him get rid of Percy and others in camp half blood. But Luke knows that Nico is dating will, so that makes it even more harder because Nico wouldn't betray camp half blood because will is on camp half blood so it's going to be hard. Because Luke wants Nico to join him in Kronos team.

Luke: Nico let's go have a talk in the woods shall we