Sex between people who've isolated together still presents some risk, though it's much safer than someone who has been out of quarantine. The researchers said the safest approach to sexual activity in a pandemic is to practice abstinence. Another option, they said, is masturbation.
When I lived in suburban Chicago, this guy and girl I knew had a neighbor. They called him "pup tent" because, well you know, that is what a sheets looked like when he was spanking the monkey. LOL