I thnk this is a really important topic, 300.
The role of intimate relations in the spread of the virus - or what to do regarding them - has not been raised in any offical guidance as far as I know. We are carrying on as normal in terms of kissing and hugging (each other and the children), and sex.
One of my children and I are at high risk if we contract the virus. We can limit social contact in society but not easily at home. We are a family of 5 living in an ordinary 3 bed semi. It would be impossible to self isolate from each other as my child's care is very hands on (nappies, tube feeding etc) or to find separate sleeping places (two of our children share a room).
I think if I felt ill, or my husband, we wouldn't be up for sex. That tends to be the way it goes with normal infections - we catch up later. But we would still (probably) have to share a bed and even if one of us took the sofa instead we would still be in contact and touching the same door handles, taps, fridge, kettle, child, cash, post etc. Someone would have to go within a metre of the sick person to give them soup, water etc.
In my opinion it is impossible to self isolate from other people in the same household when there are children around. I think we would do the best we could and hope for mild cases rather than no contagion at all.
As far as sex goes, there is a far greater chance of partners inadvertantly passing it on to each other before symptoms show. It is scary, but what can we do? Lock down cities and refrain from sex? I think any lock down will lead to both more sex and more arguments for couples... not scientifically researched, obvs, but certainly a social issue.
Anecdotally, more unexpected pregnancies due to sponateous consensual sex, more domestic abuse and more rape (along with more looting and black market sales) have a history during wartime conditions. It was never all 'keep calm and carry on'.
Keep well, keep safe, and keep kind.