Guy I know has over the course of this pandemic been telling me how careful he is, carries hand sanitiser everywhere etc. Then in the same breath tells me he isn’t seeing anyone apart from all his work colleagues, oh and his mum and gran. Went to get tested because he claims he wanted to be safe so that he could enjoy Xmas. Didn’t want to tell him just because you are negative on a Monday doesn’t mean you are positive on a Friday. Anyway turns out he is positive but his girlfriend is negative.