And not just with my husband. I assume as with most writers, my current main character inhabits my head quite a lot of the time, including during sleep.
I woke this morning to realise that, Hamish - second-hand bookshop owner and failed poet - needs to actually live somewhere else other than Bound's Green, London, due to certain distances between his various haunts. So, most of the London mapping I had done on my last city wanderings were in fact inaccurate and he should actually be living in Camden. Of course I can travel around the city on Google Earth but it's not the same; I need (and want) to walk the roads he would walk, take the buses and visit the shops he would go in, at least the ones that are still there (book set in 1985).
Time-warp barber shop in Muswell Hill, which Hamish could go in as his lover (taxidermist) lives above her premises on Duke's Avenue (currently a chemist's shop but as taxidermy shops are rare even in London I've had to relax my rules a little)