My husband and I have been business partners for the last 20 odd years.
It is a bit different now because I do my work from Tenerife and he is in the UK, but prior to moving here, like tc22 and her hubby, mine goes out doing the electrical jobs and I do all the admin/account/VAT/wages etc etc etc.
Even he has admitted that I make his job easier because I am so good at mine....ah bless

. Also like tc22 once the working day is finished, work was not mentioned until we started the next day. Our time away from work was our family time. Worked/s ok for us