It wasn't correct advice, it was terrible advice. The shyt he's telling Jesse he didn't even do himself.
at Walt asking "have you thought about being honest with her?" when Jesse only been dating this chick a few months, and Walt didn't even tell his wife of 20 years the truth, she had to figure it out herself.
The whole angle was bullshyt. You think Mike goes home to his daughter or son or whoever's kid that is, talking about "yeah, I murked 5 people today". C'mon son. Jesse's girl is smart enough to know he's doing dirt, and she obviously has no problem with it, she's with him. The particulars of what he's doing don't need to be discussed.
Fred.