yeah navigating the emotional minefield takes a toll and usually one of thier co-entrained snaps them back into formation ( peer group pressure has been weaponised)
like that hot chick at the pub that's right to go and then one of her fugly mates talks her out of it with emotional guilt trip crap just as you're heading out the door
start with the flawed foundations they've built thier belief on , who told them he lied , who keeps telling them he lied , what do they have to gain from lying to them . point out other blatant lies they've told and been proven false