I love snails. After the rain in California, the damp earth drives them to the sidewalk. Usually in twos — they move along in parallel, but slowly. They are hermaphrodites. That means that each one has the requisite sex organs to function as both sexes. It must be very hard for them to get together as a couple. First they have to decide which one is going to be which sex that day.
I had a patient once who tenderly explained to me what that situation could be like for humans. Last I heard, I am pleased to report they are a most excellent couple. People really can find happiness. Some people do not know the road until they are already on it.