Lisa Appleton is helping share her pearls of wisdom once more to help prevent hanky-panky horrors and nookie nightmares.Last week, Lisa was helping a guy whose girlfriend wanted to have a threesome with him and her female housemate.Lisa advised against it after learning the man was sceptical, as she thought it could ruin the dynamic of their happy and healthy relationship forever.This week, Lisa is helping a man who is worrying, as the woman he's in an open relationship with, is having casual sex in lockdown despite the UK-wide 'sex ban' restrictions.Dear Lisa, My girlfriend and I have been dating for six years.