Your sense that you can trust how things will be from one day to the next, derived from how things have been between you and them each day until now. For the first few days of working from adjusting and switching to working from home or travelling in a zombie apocalypse, it was like the moments and days after a relationship breakup. You want to make plans to go away together in the summer, to move to a new place together, to have them there to talk to and to be company when you need to share how your day was or on a day out in the Easter Bank Holiday sunshine.