I experienced this personally in pre-vax days. We were bubbling with one local friend and only meeting outdoors. He knew all the rules. It turned out that he was going to his former workplace on campus and hanging out with his old coworkers, and no one (contrary to public orders) was masking indoors. When he slipped up and admitted this, my rage was so great that I went inside my house and shut the door, and he was banished for 3 weeks. I have spent the entire pandemic trying my best and making sure that everyone I spend time with knows *exactly* what my habits and vax status are, so they can make informed decisions about what we do together. I can't abide liars when fucking LIVES ARE AT STAKE.