The norovirus is very contagious and can easily spread from person to person.
You should never kiss someone who has the norovirus or you can and will get the norovirus yourself.
People who have the norovirus are contagious with the norovirus from the time they begin getting ill with the norovirus and the person is also still contagious until 3 days after they recover from the norovirus.
Avoid touching, hugging, kissing etc with the norovirus infected person until at least 4 days after they recover from the norovirus.
It can be hard to not get near someone you love when they are infected with the norovirus but it's best for you and your health.
Allow the person to recover from the norovirus and then you can kiss them or touch them as it's not a good thing to become infected with the norovirus yourself.