On reasonable terms with NDN - look after pets and gardens when we're each away, take in parcels - that sort of thing, but wouldn't say best friends. Also have each other's keys - handy as we both have teenagers and being locked out isn't unusual. Yesterday I worked from home, nipped out for half an hour and when I came back a parcel had been left in the middle of my lounge floor - not a particularly big parcel that you wouldn't want in your own house for a while and not tucked just inside the front door either. AIBU and he was being helpful or is it creepy to let yourself into someone else's house like that? At home again today and feeling a bit vulnerable and have dropped the latch on the door!