Older SS is 13. DH helps coach his football team. SS was unable to make it to practice last night due to a "family emergency" per BM. So when DH picked SS up today he asked SS why he wasn't at practice. SS stated it was a family emergency so DH asked if everyone was okay. After a little more conversation, SS admitted there was no family emergency and everyone was fine. Come to find out, there was drama going on between SS and his girlfriend and he didn't feel like going to practice so BM lied for him. Which in turn resulted in SS lying to DH.
This isn't the first time BM has encouraged SS to lie to DH or others. He's 13 years old! She should be teaching him that lying is wrong. Some day it will come back on her when he starts lying to her. Right now they have such a close relationship (that is wrong in so many ways) that it doesn't affect her poorly but as he grows up, it will only get worse.
How do we help him understand that lying is wrong regardless of the situation when she condones it in her home?