They are friendly. They say hello. But they do not push conversation. They do not start conversation. They will respond or engage if H starts it but that's it.
Much like the DB mantra... let your parents think of him as a friendly neighbor.
Me: 43 M: 10y S:15 ILYBINILWY 2/18/13 W moved out 2/18/13 Filed for D: 2/17/13 Got DB: 2/20/13 Got DR: 2/23/13 180 & LRT Began: 2/25/13 D Final Dec '13